Swanson’s Thrush. Jeff Tingle/Macaulay Library. eBird S35602098.
Continental Summary
Widespread light to moderate movements that feature Forster’s Tern, Vaux’s Swift, Bank Swallow, Wilson’s Warbler, Hermit Warbler, and Lazuli Bunting come to the West to begin and end the period, while the East experiences a series of moderate to heavy flights of Broad-winged Hawk, Sora, Semipalmated Plover, Semipalmated Sandpiper, Wilson’s Phalarope, Eastern Wood-Pewee, White-eyed Vireo, and Prothonotary Warbler in advance of a slow moving frontal boundary. Tuesday and Wednesday will have the best potential for fallouts and concentrations along the western Gulf Coast.
Arrows show wind speed and direction (arrow points in the direction to which wind is blowing) 100 m above ground level. Areas with southerly winds are colored red; northerly winds colored blue. Accumulated precipitation (in 6 hour intervals) is green, outlined by white. Broadly speaking, areas of the map in red will experience conditions that are favorable for migration, and areas where red and green (and red and blue) intersect and overlap may experience migrant concentrations and fallouts as migrants interact with precipitation.
We use data collected by eBird users help make more accurate forecasts. If you enjoy the predictions contained in these posts, please consider submitting your own bird sightings to eBird to even further improve the content. Every observation counts, whether it be a single bird at a feeder in your backyard, or an entire day spent in a national park. To get started with eBird, head on over to the site!
Please note that photographs and other digital media showing birds come from the Macaulay Library, which receives credit along with the photographer/observer in the media caption as part of a new initiative that allows public contribution, access and use of natural history media.
Finally, and new for Spring 2017, our friend Kyle Horton of the Radar Aeroecology Lab at Oklahoma University created a new set of images depicting spring bird movements in the Gulf of Mexico region as part of an analysis that he is leading as part of our ongoing collaboration. This feature appears in the Gulf Coast and Southeast region forecast.
Need a review of our definitions for regions, species on the move, and migration amounts? Please visit this link.
Quick Links to Regions
Upper Midwest and Northeast |
Gulf Coast and Southeast |
Great Plains |
West |
Upper Midwest and Northeast
A slow start to the weekend from a migration perspective quickly accelerates as favorable migration conditions arrive (finally). Widespread moderate to heavy flights will occur by Saturday and Sunday, as warmer conditions and southerly flow build into most areas. These conditions remain in place through the beginning of the work week, until an advancing cold front begins to encroach on the region. Its passage on Tuesday night shuts down movements in most areas. Migrants return to the air on Wednesday night in portions of the upper Midwest, as the next pulse of favorable conditions begins to build.
Prothonotary Warbler. David Hart/Macaulay Library. eBird S35758287.
Species on the Move
Beginning Arrivals What is this?
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Greater Yellowlegs | *** | 3/25 | 4/13 | 4/26 | 5/19 | 5/29 |
| Black-crowned Night-Heron | * | 3/27 | 5/8 | 5/20 | 5/29 | 6/1 |
| Sharp-shinned Hawk | * | 3/27 | 4/10 | 4/26 | 5/7 | 5/17 |
| Lesser Yellowlegs | *** | 3/28 | 4/14 | 5/4 | 5/18 | 5/26 |
| Belted Kingfisher | *** | 3/28 | 4/7 | 4/16 | 5/6 | 5/12 |
| Purple Martin | *** | 3/29 | 4/11 | 5/17 | 6/1 | 6/8 |
| Northern Flicker | ****! | 3/30 | 4/8 | 4/18 | 5/9 | 5/15 |
| Field Sparrow | *** | 3/30 | 4/9 | 4/28 | 5/9 | 6/18 |
| Northern Rough-winged Swallow | *** | 3/31 | 4/16 | 5/1 | 5/20 | 5/29 |
| Pine Warbler | *** | 3/31 | 4/9 | 4/24 | 5/8 | 5/15 |
| Caspian Tern | *** | 4/1 | 4/9 | 4/28 | 5/20 | 6/4 |
| Forster's Tern | ** | 4/1 | 4/12 | 5/10 | 5/22 | 6/4 |
| Yellow-throated Warbler | *** | 4/1 | 4/8 | 4/26 | 5/2 | 5/19 |
| Chipping Sparrow | ****! | 4/1 | 4/11 | 5/3 | 5/10 | 5/14 |
| Purple Finch | *** | 4/1 | 4/13 | 4/25 | 5/4 | 5/11 |
| Palm Warbler | *** | 4/3 | 4/25 | 5/4 | 5/19 | 5/23 |
| Swamp Sparrow | *** | 4/3 | 4/11 | 5/2 | 5/9 | 5/25 |
| Eastern Towhee | ****! | 4/3 | 4/15 | 5/2 | 5/9 | 5/16 |
| Brown Thrasher | *** | 4/4 | 4/11 | 5/1 | 5/9 | 5/13 |
| Savannah Sparrow | *** | 4/4 | 4/13 | 5/6 | 5/24 | 6/21 |
| Barn Swallow | ****! | 4/5 | 4/24 | 5/19 | 5/29 | 6/6 |
| Blue-gray Gnatcatcher | ****! | 4/5 | 4/16 | 5/4 | 5/11 | 5/29 |
| Ruby-crowned Kinglet | ****! | 4/6 | 4/11 | 4/24 | 5/8 | 5/13 |
| Yellow-rumped Warbler | ****! | 4/8 | 4/24 | 5/5 | 5/18 | 5/23 |
| White-throated Sparrow | ****! | 4/8 | 4/17 | 4/28 | 5/9 | 5/18 |
| Broad-winged Hawk | *** | 4/9 | 4/14 | 4/26 | 5/6 | 5/10 |
| Sora | *** | 4/11 | 4/20 | 5/8 | 5/20 | 5/29 |
| White-eyed Vireo | *** | 4/11 | 4/23 | 5/4 | 5/13 | 5/21 |
| Prothonotary Warbler | *** | 4/12 | 4/20 | 5/11 | 5/17 | 5/22 |
Peaking Arrivals
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Red-winged Blackbird | *** | 3/2 | 3/9 | 5/6 | 5/28 | 6/25 |
| Common Grackle | *** | 3/4 | 3/10 | 5/19 | 6/24 | After Jun 30 |
| Rusty Blackbird | ** | 3/7 | 3/11 | 4/9 | 5/4 | 5/11 |
| Song Sparrow | ****! | 3/7 | 3/13 | 4/10 | 5/10 | 6/24 |
| Pied-billed Grebe | *** | 3/8 | 3/20 | 4/10 | 4/28 | 5/7 |
| Great Blue Heron | *** | 3/9 | 3/22 | 5/12 | 5/30 | 6/7 |
| Common Loon | *** | 3/17 | 3/26 | 4/12 | 4/22 | 6/4 |
| American Kestrel | ** | 3/17 | 3/27 | 4/10 | 4/29 | 5/9 |
| Pectoral Sandpiper | * | 3/20 | 3/29 | 4/18 | 5/23 | 6/5 |
| Blue-winged Teal | *** | 3/14 | 3/31 | 4/19 | 4/30 | 5/10 |
| Great Egret | *** | 3/23 | 3/31 | 5/12 | 5/29 | 6/3 |
| Double-crested Cormorant | *** | 3/19 | 4/1 | 4/20 | 5/30 | 6/7 |
| Osprey | *** | 3/15 | 4/1 | 4/20 | 5/1 | 5/8 |
| Bonaparte's Gull | ** | 3/15 | 4/1 | 4/11 | 4/20 | 5/5 |
| Eastern Phoebe | ****! | 3/12 | 4/1 | 4/10 | 4/14 | 6/2 |
| Tree Swallow | *** | 3/28 | 4/1 | 5/7 | 6/24 | 6/26 |
| Yellow-bellied Sapsucker | *** | 3/29 | 4/3 | 4/13 | 4/23 | 4/27 |
| Brown Creeper | *** | 3/29 | 4/3 | 4/10 | 4/23 | 5/8 |
| Golden-crowned Kinglet | *** | 3/30 | 4/3 | 4/9 | 4/16 | 4/24 |
| Wilson's Snipe | ** | 3/10 | 4/4 | 4/13 | 4/29 | 5/10 |
| Winter Wren | ** | 3/29 | 4/4 | 4/13 | 4/23 | 5/11 |
| Cooper's Hawk | * | 3/15 | 4/6 | 4/26 | 5/11 | 5/25 |
| Hermit Thrush | *** | 4/2 | 4/6 | 4/19 | 5/7 | 5/11 |
| Louisiana Waterthrush | ** | 3/29 | 4/6 | 4/30 | 5/14 | 6/17 |
| Vesper Sparrow | * | 3/28 | 4/6 | 6/11 | 6/19 | 6/22 |
| Brown-headed Cowbird | *** | 3/11 | 4/6 | 5/3 | 5/11 | After Jun 30 |
| Belted Kingfisher | *** | 3/28 | 4/7 | 4/16 | 5/6 | 5/12 |
| Northern Flicker | ****! | 3/30 | 4/8 | 4/18 | 5/9 | 5/15 |
| Yellow-throated Warbler | ** | 4/1 | 4/8 | 4/26 | 5/2 | 5/19 |
| Caspian Tern | ** | 4/1 | 4/9 | 4/28 | 5/20 | 6/4 |
| Pine Warbler | *** | 3/31 | 4/9 | 4/24 | 5/8 | 5/15 |
| Field Sparrow | *** | 3/30 | 4/9 | 4/28 | 5/9 | 6/18 |
| Sharp-shinned Hawk | * | 3/27 | 4/10 | 4/26 | 5/7 | 5/17 |
| Purple Martin | ** | 3/29 | 4/11 | 5/17 | 6/1 | 6/8 |
| Ruby-crowned Kinglet | ****! | 4/6 | 4/11 | 4/24 | 5/8 | 5/13 |
| Brown Thrasher | *** | 4/4 | 4/11 | 5/1 | 5/9 | 5/13 |
| Chipping Sparrow | ****! | 4/1 | 4/11 | 5/3 | 5/10 | 5/14 |
| Swamp Sparrow | *** | 4/3 | 4/11 | 5/2 | 5/9 | 5/25 |
| Forster's Tern | ** | 4/1 | 4/12 | 5/10 | 5/22 | 6/4 |
| Greater Yellowlegs | *** | 3/25 | 4/13 | 4/26 | 5/19 | 5/29 |
| Savannah Sparrow | *** | 4/4 | 4/13 | 5/6 | 5/24 | 6/21 |
| Purple Finch | *** | 4/1 | 4/13 | 4/25 | 5/4 | 5/11 |
| Broad-winged Hawk | *** | 4/9 | 4/14 | 4/26 | 5/6 | 5/10 |
| Lesser Yellowlegs | *** | 3/28 | 4/14 | 5/4 | 5/18 | 5/26 |
Beginning Departures
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| American Black Duck | *** | - | - | Before Mar 1 | 4/10 | 4/24 |
| Greater Scaup | ** | - | - | Before Mar 1 | 4/8 | 5/2 |
| American Tree Sparrow | *** | - | - | Before Mar 1 | 4/16 | 5/3 |
| Common Redpoll | * | - | - | Before Mar 1 | 4/17 | 5/3 |
| Common Merganser | *** | 3/2 | 3/4 | 3/10 | 4/9 | 4/23 |
| Bald Eagle | * | 3/5 | 3/7 | 3/10 | 5/28 | 6/7 |
| Ring-billed Gull | *** | 3/2 | 3/6 | 3/12 | 4/8 | 4/28 |
| Tundra Swan | ** | 3/2 | 3/6 | 3/13 | 4/8 | 4/16 |
| American Wigeon | *** | 3/2 | 3/8 | 3/18 | 4/9 | 4/25 |
| Gadwall | ** | 3/2 | 3/9 | 3/20 | 4/8 | 5/4 |
| Ring-necked Duck | *** | 3/2 | 3/10 | 3/21 | 4/10 | 4/29 |
| Red-breasted Merganser | ** | 3/2 | 3/6 | 3/21 | 4/12 | 5/11 |
| Hooded Merganser | *** | 3/2 | 3/9 | 3/23 | 4/8 | 4/16 |
| Lesser Scaup | *** | 3/2 | 3/6 | 3/25 | 4/10 | 5/8 |
| Horned Grebe | ** | 3/2 | 3/12 | 3/25 | 4/15 | 5/9 |
| Bufflehead | *** | 3/2 | 3/9 | 3/30 | 4/17 | 5/9 |
| Ruddy Duck | ** | 3/2 | 3/10 | 4/1 | 4/29 | 5/8 |
| Killdeer | *** | 3/2 | 3/8 | 4/1 | 4/9 | 6/5 |
| Green-winged Teal | *** | 3/2 | 3/10 | 4/2 | 4/30 | 5/11 |
| Northern Shoveler | *** | 3/2 | 3/9 | 4/3 | 4/28 | 5/8 |
| American Coot | *** | 3/2 | 3/7 | 4/4 | 4/29 | 5/21 |
| Dark-eyed Junco | *** | 3/12 | 3/14 | 4/5 | 4/24 | 5/2 |
| Northern Harrier | ** | 3/18 | 3/28 | 4/6 | 4/28 | 5/9 |
| Fox Sparrow | *** | 3/10 | 3/12 | 4/6 | 4/20 | 4/27 |
| Golden-crowned Kinglet | *** | 3/30 | 4/3 | 4/9 | 4/16 | 4/24 |
| Rusty Blackbird | ** | 3/7 | 3/11 | 4/9 | 5/4 | 5/11 |
| Pied-billed Grebe | *** | 3/8 | 3/20 | 4/10 | 4/28 | 5/7 |
| American Kestrel | *** | 3/17 | 3/27 | 4/10 | 4/29 | 5/9 |
| Eastern Phoebe | *** | 3/12 | 4/1 | 4/10 | 4/14 | 6/2 |
| Brown Creeper | *** | 3/29 | 4/3 | 4/10 | 4/23 | 5/8 |
| Song Sparrow | ** | 3/7 | 3/13 | 4/10 | 5/10 | 6/24 |
| Bonaparte's Gull | ** | 3/15 | 4/1 | 4/11 | 4/20 | 5/5 |
| Common Loon | *** | 3/17 | 3/26 | 4/12 | 4/22 | 6/4 |
| Wilson's Snipe | *** | 3/10 | 4/4 | 4/13 | 4/29 | 5/10 |
| Yellow-bellied Sapsucker | *** | 3/29 | 4/3 | 4/13 | 4/23 | 4/27 |
| Winter Wren | ** | 3/29 | 4/4 | 4/13 | 4/23 | 5/11 |
Ending Departures
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Rough-legged Hawk | * | - | - | Before Mar 1 | 3/3 | 4/15 |
| Horned Lark | * | - | - | Before Mar 1 | 3/15 | After Jun 30 |
| American Woodcock | * | 3/5 | 3/10 | 3/16 | 3/22 | 5/30 |
| Snow Goose | ** | 3/2 | 3/6 | 3/9 | 4/1 | 4/12 |
| Redhead | ** | 3/2 | 3/3 | 3/11 | 4/1 | 4/30 |
| Common Goldeneye | *** | 3/2 | 3/3 | 3/5 | 4/2 | 4/17 |
| Canvasback | ** | 3/2 | 3/3 | 3/10 | 4/3 | 4/20 |
| Northern Pintail | *** | 3/2 | 3/6 | 3/11 | 4/5 | 4/15 |
| Tundra Swan | ** | 3/2 | 3/6 | 3/13 | 4/8 | 4/16 |
| Gadwall | *** | 3/2 | 3/9 | 3/20 | 4/8 | 5/4 |
| Greater Scaup | ** | - | - | Before Mar 1 | 4/8 | 5/2 |
| Hooded Merganser | *** | 3/2 | 3/9 | 3/23 | 4/8 | 4/16 |
| Ring-billed Gull | *** | 3/2 | 3/6 | 3/12 | 4/8 | 4/28 |
| American Wigeon | *** | 3/2 | 3/8 | 3/18 | 4/9 | 4/25 |
| Common Merganser | *** | 3/2 | 3/4 | 3/10 | 4/9 | 4/23 |
| Killdeer | * | 3/2 | 3/8 | 4/1 | 4/9 | 6/5 |
| American Black Duck | *** | - | - | Before Mar 1 | 4/10 | 4/24 |
| Ring-necked Duck | *** | 3/2 | 3/10 | 3/21 | 4/10 | 4/29 |
| Lesser Scaup | *** | 3/2 | 3/6 | 3/25 | 4/10 | 5/8 |
| Red-breasted Merganser | *** | 3/2 | 3/6 | 3/21 | 4/12 | 5/11 |
| Eastern Phoebe | *** | 3/12 | 4/1 | 4/10 | 4/14 | 6/2 |
Gulf Coast and Southeast
Moderate to heavy flights will return to the region and gradually become more widespread over the weekend from west to east, as the strong cold front of last period that shut down movements in its wake moves to the east out of the region. The next frontal boundary arrives on Monday night and Tuesday, offering the best chance for western Gulf Coast fallouts and concentrations on Tuesday in particular. In its wake, movements will be significantly more local and less intense, To end the period, Texas will see a return of moderate and heavy flights. Note the decidedly easterly flow for the period, which will bring a more Caribbean flavor of migration to the western Gulf Coast that will include more Blackpoll, Cape May, and Black-throated Blue Warblers than usual.
Wilson’s Phalarope. Richard Garrigus/Macaulay Library. eBird S35659569.
Beginning Arrivals What is this?
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Yellow-crowned Night-Heron | ** | 3/2 | 4/9 | 5/1 | 5/16 | 5/20 |
| Long-billed Dowitcher | * | 3/2 | 4/13 | 4/23 | 5/5 | 5/15 |
| Laughing Gull | *** | 3/2 | 4/12 | 4/20 | 5/1 | 5/7 |
| Marsh Wren | * | 3/6 | 4/13 | 4/19 | 4/30 | 5/8 |
| Sora | * | 3/7 | 4/9 | 4/22 | 5/1 | 5/15 |
| Lesser Yellowlegs | ** | 3/7 | 4/13 | 4/25 | 5/7 | 5/24 |
| Black-and-white Warbler | *** | 3/7 | 4/17 | 4/27 | 5/7 | 5/17 |
| Willet | ** | 3/8 | 4/12 | 4/19 | 4/30 | 5/7 |
| Short-billed Dowitcher | * | 3/13 | 4/13 | 4/20 | 5/4 | 5/21 |
| Gull-billed Tern | * | 3/15 | 4/10 | 4/18 | 5/2 | 5/8 |
| Sandwich Tern | ** | 3/15 | 4/13 | 4/19 | 4/30 | 5/7 |
| Stilt Sandpiper | * | 3/16 | 4/14 | 4/30 | 5/19 | 5/26 |
| White-throated Sparrow | *** | 3/16 | 4/7 | 4/11 | 4/29 | 5/9 |
| Caspian Tern | * | 3/17 | 4/13 | 4/19 | 5/2 | 5/8 |
| American Avocet | * | 3/19 | 4/10 | 4/19 | 5/5 | 5/11 |
| White-faced Ibis | * | 3/23 | 4/14 | 4/25 | 5/3 | 5/8 |
| Green Heron | *** | 3/26 | 4/10 | 4/28 | 5/18 | 5/22 |
| Least Tern | *** | 3/27 | 4/12 | 4/23 | 4/30 | 5/6 |
| Eastern Kingbird | *** | 3/27 | 4/8 | 4/29 | 5/18 | 5/24 |
| Great Crested Flycatcher | ****! | 3/28 | 4/20 | 5/8 | 6/9 | After Jun 30 |
| Semipalmated Sandpiper | ** | 3/29 | 4/18 | 5/14 | 5/31 | 6/9 |
| Chuck-will's-widow | ** | 3/29 | 4/10 | 4/24 | 6/25 | After Jun 30 |
| Sanderling | * | 3/30 | 4/13 | 4/19 | 5/30 | 6/7 |
| Brown-crested Flycatcher | ** | 3/31 | 4/17 | 4/23 | 5/31 | 6/4 |
| Bank Swallow | ** | 3/31 | 4/18 | 5/2 | 5/19 | 5/26 |
| Orchard Oriole | ****! | 3/31 | 4/13 | 4/26 | 5/17 | 6/19 |
| Fulvous Whistling-Duck | * | 4/1 | 4/13 | 4/24 | 5/3 | 5/9 |
| Solitary Sandpiper | *** | 4/1 | 4/15 | 4/26 | 5/9 | 5/19 |
| Red-eyed Vireo | ****! | 4/1 | 4/15 | 5/12 | 5/24 | After Jun 30 |
| Bronzed Cowbird | ** | 4/2 | 4/13 | 4/27 | 5/31 | 6/4 |
| Kentucky Warbler | *** | 4/3 | 4/14 | 4/21 | After Jun 30 | - |
| Cerulean Warbler | ** | 4/3 | 4/13 | 4/20 | 4/30 | 5/5 |
| Summer Tanager | ****! | 4/3 | 4/15 | 4/25 | 4/30 | 5/17 |
| Indigo Bunting | ****! | 4/3 | 4/16 | 4/27 | 5/10 | 6/23 |
| Whimbrel | *** | 4/5 | 4/11 | 4/25 | 5/4 | 6/1 |
| Bell's Vireo | ** | 4/5 | 4/17 | 4/28 | 6/1 | 6/9 |
| Warbling Vireo | *** | 4/5 | 4/13 | 5/2 | 5/17 | 5/23 |
| Nashville Warbler | *** | 4/5 | 4/13 | 4/26 | 5/8 | 5/19 |
| Common Yellowthroat | *** | 4/5 | 4/15 | 5/2 | 5/16 | 5/24 |
| Bullock's Oriole | * | 4/5 | 4/17 | 5/24 | 5/31 | After Jun 30 |
| Western Kingbird | *** | 4/7 | 4/20 | 5/10 | 5/30 | 6/2 |
| Blue Grosbeak | ****! | 4/7 | 4/17 | 4/27 | 6/21 | 6/24 |
| Least Bittern | ** | 4/8 | 4/14 | 4/24 | 5/3 | 5/9 |
| Semipalmated Plover | *** | 4/8 | 4/15 | 4/25 | 5/29 | 6/6 |
| Ruddy Turnstone | *** | 4/8 | 4/14 | 4/23 | 5/24 | 5/31 |
| Black-bellied Plover | ** | 4/9 | 4/14 | 4/24 | 5/20 | 5/28 |
| Dunlin | * | 4/9 | 4/13 | 4/23 | 5/25 | 6/3 |
| Sedge Wren | ** | 4/9 | 4/13 | 4/18 | 4/29 | 5/5 |
| Black-throated Green Warbler | *** | 4/9 | 4/14 | 4/29 | 5/15 | 5/22 |
| Tennessee Warbler | *** | 4/10 | 4/14 | 4/27 | 5/15 | 5/19 |
| Baltimore Oriole | ****! | 4/10 | 4/14 | 4/27 | 5/5 | 5/19 |
| Yellow-billed Cuckoo | *** | 4/11 | 5/9 | 6/6 | 6/12 | After Jun 30 |
| Common Nighthawk | *** | 4/11 | 4/20 | 5/14 | 6/13 | After Jun 30 |
| Ovenbird | *** | 4/11 | 4/17 | 4/29 | 5/9 | After Jun 30 |
| Yellow-breasted Chat | *** | 4/11 | 4/18 | 6/7 | 6/24 | After Jun 30 |
| Scarlet Tanager | ****! | 4/11 | 4/16 | 4/24 | 5/7 | 5/12 |
| Painted Bunting | ****! | 4/11 | 4/21 | 4/29 | After Jun 30 | - |
| Spotted Sandpiper | *** | 4/12 | 4/22 | 5/5 | 5/20 | 5/26 |
| Wood Thrush | ****! | 4/12 | 4/17 | 4/26 | 5/8 | 6/20 |
| Gray Catbird | ****! | 4/12 | 4/17 | 4/27 | 5/8 | 5/17 |
| Northern Waterthrush | *** | 4/12 | 4/16 | 4/28 | 5/15 | 5/21 |
| Clay-colored Sparrow | *** | 4/12 | 4/23 | 4/29 | 5/11 | 5/17 |
| White-crowned Sparrow | ** | 4/12 | 4/18 | 4/25 | 5/7 | 5/14 |
| Rose-breasted Grosbeak | ****! | 4/12 | 4/17 | 4/28 | 5/5 | 5/16 |
| Least Sandpiper | *** | 4/13 | 4/22 | 5/2 | 5/18 | 5/24 |
| Acadian Flycatcher | *** | 4/13 | 4/23 | 6/5 | 6/16 | After Jun 30 |
| Swainson's Thrush | ****! | 4/13 | 4/17 | 5/4 | 5/17 | 5/23 |
| Golden-winged Warbler | ** | 4/13 | 4/24 | 4/29 | 5/5 | 5/15 |
| American Redstart | *** | 4/13 | 4/29 | 5/10 | 5/16 | 5/23 |
| Blackburnian Warbler | *** | 4/13 | 4/26 | 5/11 | 5/16 | 5/21 |
| Canada Warbler | ** | 4/13 | 5/7 | 5/13 | 5/20 | 5/25 |
| Wilson's Phalarope | *** | 4/14 | 4/21 | 5/4 | 5/18 | 5/26 |
| Eastern Wood-Pewee | *** | 4/14 | 4/24 | 5/12 | 5/22 | 5/26 |
| Yellow Warbler | *** | 4/14 | 4/25 | 5/1 | 5/17 | 5/22 |
Peaking Arrivals
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Brown Pelican | * | - | 3/2 | 4/17 | 4/30 | 5/6 |
| Blue-headed Vireo | * | 3/2 | 3/3 | 4/8 | 5/10 | 5/26 |
| Western Sandpiper | * | 3/2 | 3/7 | 4/14 | 5/22 | 5/31 |
| Lincoln's Sparrow | ** | 3/2 | 3/7 | 4/16 | 5/8 | 5/17 |
| Yellow-throated Warbler | *** | 3/2 | 3/8 | 4/9 | 4/25 | After Jun 30 |
| Northern Parula | *** | 3/2 | 3/15 | 4/18 | 5/10 | 6/25 |
| Black-bellied Whistling-Duck | ** | 3/8 | 3/17 | 4/24 | 5/2 | 5/7 |
| Black-necked Stilt | *** | 3/9 | 3/17 | 4/21 | 5/2 | 5/9 |
| Black-chinned Hummingbird | ** | 3/2 | 3/17 | 5/4 | 5/24 | 6/2 |
| Brown-headed Cowbird | *** | 3/7 | 3/18 | 4/29 | 5/23 | After Jun 30 |
| White-eyed Vireo | *** | 3/6 | 3/22 | 4/15 | 6/13 | 6/26 |
| Northern Rough-winged Swallow | ** | 3/2 | 3/22 | 5/1 | 5/12 | After Jun 30 |
| Purple Martin | ** | 3/16 | 3/22 | 6/22 | After Jun 30 | - |
| Barn Swallow | *** | 3/10 | 3/22 | 5/2 | 5/19 | 5/27 |
| Pectoral Sandpiper | * | 3/2 | 3/23 | 4/28 | 5/18 | 5/28 |
| Yellow-throated Vireo | *** | 3/13 | 3/24 | 4/22 | After Jun 30 | - |
| Blue-gray Gnatcatcher | *** | 3/17 | 3/24 | 4/8 | 4/18 | 6/26 |
| Hooded Warbler | *** | 3/17 | 3/24 | 4/19 | 4/29 | 5/10 |
| Broad-winged Hawk | *** | 3/19 | 3/26 | 4/13 | 4/24 | 5/26 |
| Scissor-tailed Flycatcher | *** | 3/16 | 3/26 | 5/12 | 5/30 | After Jun 30 |
| House Wren | * | 3/18 | 3/27 | 4/14 | 4/26 | 5/18 |
| Upland Sandpiper | ** | 3/21 | 3/28 | 4/12 | 5/5 | 5/12 |
| Swainson's Hawk | ** | 3/17 | 3/29 | 4/18 | 5/6 | 6/1 |
| Baird's Sandpiper | * | 3/9 | 3/29 | 5/3 | 5/19 | 5/28 |
| Chimney Swift | *** | 3/23 | 4/2 | 5/11 | 5/25 | 5/29 |
| Prairie Warbler | *** | 3/22 | 4/3 | 4/18 | 4/26 | 6/18 |
| Cliff Swallow | *** | 3/12 | 4/4 | 5/12 | 5/20 | 6/17 |
| Blue-winged Warbler | *** | 4/1 | 4/4 | 4/19 | 4/29 | 5/4 |
| Cattle Egret | *** | 3/18 | 4/5 | 4/21 | 5/2 | 5/8 |
| Franklin's Gull | ** | 3/28 | 4/5 | 4/19 | 5/2 | 5/23 |
| Worm-eating Warbler | *** | 4/3 | 4/5 | 4/19 | 4/29 | 5/2 |
| Prothonotary Warbler | *** | 3/25 | 4/5 | 4/18 | 4/22 | 6/26 |
| Royal Tern | ** | 3/2 | 4/6 | 4/19 | 4/30 | 5/6 |
| Ruby-throated Hummingbird | *** | 3/15 | 4/6 | 4/26 | 5/17 | 5/23 |
| Ash-throated Flycatcher | * | 3/15 | 4/6 | 5/24 | 5/31 | 6/3 |
| Lark Sparrow | ** | 3/16 | 4/6 | 5/1 | 5/29 | After Jun 30 |
| White-throated Sparrow | *** | 3/16 | 4/7 | 4/11 | 4/29 | 5/9 |
| Eastern Kingbird | *** | 3/27 | 4/8 | 4/29 | 5/18 | 5/24 |
| Yellow-crowned Night-Heron | * | 3/2 | 4/9 | 5/1 | 5/16 | 5/20 |
| Sora | ** | 3/7 | 4/9 | 4/22 | 5/1 | 5/15 |
| Green Heron | *** | 3/26 | 4/10 | 4/28 | 5/18 | 5/22 |
| American Avocet | * | 3/19 | 4/10 | 4/19 | 5/5 | 5/11 |
| Gull-billed Tern | * | 3/15 | 4/10 | 4/18 | 5/2 | 5/8 |
| Chuck-will's-widow | ** | 3/29 | 4/10 | 4/24 | 6/25 | After Jun 30 |
| Whimbrel | ** | 4/5 | 4/11 | 4/25 | 5/4 | 6/1 |
| Willet | ** | 3/8 | 4/12 | 4/19 | 4/30 | 5/7 |
| Laughing Gull | *** | 3/2 | 4/12 | 4/20 | 5/1 | 5/7 |
| Least Tern | *** | 3/27 | 4/12 | 4/23 | 4/30 | 5/6 |
| Fulvous Whistling-Duck | * | 4/1 | 4/13 | 4/24 | 5/3 | 5/9 |
| Sanderling | * | 3/30 | 4/13 | 4/19 | 5/30 | 6/7 |
| Dunlin | * | 4/9 | 4/13 | 4/23 | 5/25 | 6/3 |
| Short-billed Dowitcher | * | 3/13 | 4/13 | 4/20 | 5/4 | 5/21 |
| Long-billed Dowitcher | * | 3/2 | 4/13 | 4/23 | 5/5 | 5/15 |
| Lesser Yellowlegs | *** | 3/7 | 4/13 | 4/25 | 5/7 | 5/24 |
| Caspian Tern | * | 3/17 | 4/13 | 4/19 | 5/2 | 5/8 |
| Sandwich Tern | * | 3/15 | 4/13 | 4/19 | 4/30 | 5/7 |
| Warbling Vireo | ** | 4/5 | 4/13 | 5/2 | 5/17 | 5/23 |
| Sedge Wren | * | 4/9 | 4/13 | 4/18 | 4/29 | 5/5 |
| Marsh Wren | ** | 3/6 | 4/13 | 4/19 | 4/30 | 5/8 |
| Nashville Warbler | *** | 4/5 | 4/13 | 4/26 | 5/8 | 5/19 |
| Cerulean Warbler | ** | 4/3 | 4/13 | 4/20 | 4/30 | 5/5 |
| Bronzed Cowbird | ** | 4/2 | 4/13 | 4/27 | 5/31 | 6/4 |
| Orchard Oriole | *** | 3/31 | 4/13 | 4/26 | 5/17 | 6/19 |
| Least Bittern | ** | 4/8 | 4/14 | 4/24 | 5/3 | 5/9 |
| White-faced Ibis | ** | 3/23 | 4/14 | 4/25 | 5/3 | 5/8 |
| Black-bellied Plover | ** | 4/9 | 4/14 | 4/24 | 5/20 | 5/28 |
| Ruddy Turnstone | ** | 4/8 | 4/14 | 4/23 | 5/24 | 5/31 |
| Stilt Sandpiper | * | 3/16 | 4/14 | 4/30 | 5/19 | 5/26 |
| Tennessee Warbler | *** | 4/10 | 4/14 | 4/27 | 5/15 | 5/19 |
| Kentucky Warbler | *** | 4/3 | 4/14 | 4/21 | After Jun 30 | - |
| Black-throated Green Warbler | *** | 4/9 | 4/14 | 4/29 | 5/15 | 5/22 |
| Baltimore Oriole | *** | 4/10 | 4/14 | 4/27 | 5/5 | 5/19 |
Beginning Departures
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Cinnamon Teal | * | - | - | Before Mar 1 | 4/10 | 5/8 |
| Northern Shoveler | ** | - | - | Before Mar 1 | 4/28 | 5/21 |
| Green-winged Teal | ** | - | - | Before Mar 1 | 4/9 | 4/23 |
| Red-breasted Merganser | * | - | - | Before Mar 1 | 4/20 | 5/11 |
| Pied-billed Grebe | *** | - | - | Before Mar 1 | 4/13 | 5/5 |
| Northern Harrier | *** | - | - | Before Mar 1 | 4/26 | 5/8 |
| Sharp-shinned Hawk | * | - | - | Before Mar 1 | 4/28 | 5/10 |
| American Coot | *** | - | - | Before Mar 1 | 4/29 | 5/16 |
| Herring Gull | * | - | - | Before Mar 1 | 4/28 | 5/6 |
| Orange-crowned Warbler | ** | - | - | Before Mar 1 | 4/28 | 5/11 |
| Palm Warbler | *** | - | 3/2 | 3/6 | 5/5 | 5/12 |
| Belted Kingfisher | *** | 3/5 | 3/6 | 3/7 | 4/15 | 4/29 |
| Common Gallinule | * | - | 3/2 | 3/9 | 5/1 | 5/9 |
| Double-crested Cormorant | *** | 3/2 | 3/7 | 3/10 | 4/9 | 5/8 |
| Swamp Sparrow | ** | 3/2 | 3/6 | 3/10 | 4/28 | 5/6 |
| Cooper's Hawk | * | 3/2 | 3/3 | 3/11 | 4/17 | 5/20 |
| Savannah Sparrow | *** | 3/7 | 3/9 | 3/13 | 5/10 | 5/18 |
| Osprey | *** | 3/2 | 3/7 | 3/14 | 4/27 | 5/3 |
| Vesper Sparrow | * | 3/7 | 3/10 | 3/15 | 5/5 | 5/15 |
| Long-billed Curlew | * | 3/2 | 3/11 | 3/16 | 4/29 | 5/12 |
| Forster's Tern | * | 3/7 | 3/9 | 3/16 | 5/1 | 5/11 |
| Spotted Towhee | * | 3/2 | 3/11 | 3/21 | 4/28 | 5/10 |
| Hermit Thrush | *** | 3/14 | 3/17 | 3/23 | 4/9 | 4/20 |
| Ruby-crowned Kinglet | *** | 3/2 | 3/7 | 3/25 | 4/21 | 5/3 |
| Common Loon | ** | 3/18 | 3/22 | 3/27 | 4/7 | 5/2 |
| Couch's Kingbird | * | 3/2 | 3/12 | 3/27 | 5/1 | 5/30 |
| Cedar Waxwing | *** | 3/2 | 3/20 | 3/27 | 5/22 | 5/28 |
| American Golden-Plover | * | 3/2 | 3/22 | 3/29 | 5/1 | 5/13 |
| Greater Yellowlegs | ** | 3/2 | 3/10 | 4/1 | 5/3 | 5/18 |
| Chipping Sparrow | *** | 3/9 | 3/18 | 4/1 | 4/16 | 5/16 |
| Louisiana Waterthrush | * | 3/14 | 3/22 | 4/2 | 5/24 | 6/13 |
| Blue-winged Teal | *** | 3/2 | 3/22 | 4/4 | 5/1 | 5/23 |
| Pine Siskin | * | 3/26 | 3/29 | 4/5 | 5/12 | 5/18 |
| Blue-headed Vireo | ** | 3/2 | 3/3 | 4/8 | 5/10 | 5/26 |
| Blue-gray Gnatcatcher | *** | 3/17 | 3/24 | 4/8 | 4/18 | 6/26 |
| Yellow-throated Warbler | ** | 3/2 | 3/8 | 4/9 | 4/25 | After Jun 30 |
| White-throated Sparrow | *** | 3/16 | 4/7 | 4/11 | 4/29 | 5/9 |
| Upland Sandpiper | * | 3/21 | 3/28 | 4/12 | 5/5 | 5/12 |
| Broad-winged Hawk | ** | 3/19 | 3/26 | 4/13 | 4/24 | 5/26 |
| Western Sandpiper | * | 3/2 | 3/7 | 4/14 | 5/22 | 5/31 |
| House Wren | ** | 3/18 | 3/27 | 4/14 | 4/26 | 5/18 |
Ending Departures
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Ruddy Duck | * | - | - | Before Mar 1 | 3/3 | 5/2 |
| Harris's Sparrow | * | - | - | Before Mar 1 | 3/10 | 5/12 |
| Ring-billed Gull | *** | - | - | Before Mar 1 | 3/14 | 5/7 |
| American Wigeon | ** | - | - | Before Mar 1 | 3/30 | 4/17 |
| Brown Creeper | ** | - | 3/2 | 3/4 | 3/30 | 4/10 |
| Gadwall | *** | - | - | Before Mar 1 | 3/31 | 4/17 |
| Tree Swallow | *** | 3/17 | 3/22 | 3/25 | 3/31 | 5/24 |
| Bufflehead | *** | - | - | Before Mar 1 | 4/1 | 4/14 |
| American White Pelican | ** | - | - | Before Mar 1 | 4/1 | 5/1 |
| Great Blue Heron | ** | - | - | Before Mar 1 | 4/1 | 5/23 |
| Bald Eagle | ** | - | - | Before Mar 1 | 4/1 | 5/22 |
| Yellow-bellied Sapsucker | *** | - | - | Before Mar 1 | 4/1 | 4/16 |
| American Kestrel | *** | - | - | Before Mar 1 | 4/1 | 4/12 |
| Yellow-rumped Warbler | *** | 3/2 | 3/4 | 3/7 | 4/1 | 5/13 |
| Lesser Scaup | *** | - | - | Before Mar 1 | 4/2 | 4/16 |
| Song Sparrow | *** | - | - | Before Mar 1 | 4/3 | 4/16 |
| Dark-eyed Junco | *** | - | - | Before Mar 1 | 4/4 | 4/14 |
| Wilson's Snipe | ** | 3/5 | 3/6 | 3/8 | 4/5 | 5/5 |
| Northern Flicker | *** | 3/2 | 3/6 | 3/9 | 4/5 | 4/17 |
| Golden-crowned Kinglet | *** | - | 3/2 | 3/9 | 4/5 | 4/11 |
| Bonaparte's Gull | ** | 3/2 | 3/3 | 3/9 | 4/6 | 4/16 |
| Common Loon | ** | 3/18 | 3/22 | 3/27 | 4/7 | 5/2 |
| Green-winged Teal | *** | - | - | Before Mar 1 | 4/9 | 4/23 |
| Double-crested Cormorant | *** | 3/2 | 3/7 | 3/10 | 4/9 | 5/8 |
| Hermit Thrush | *** | 3/14 | 3/17 | 3/23 | 4/9 | 4/20 |
| Cinnamon Teal | * | - | - | Before Mar 1 | 4/10 | 5/8 |
| Pied-billed Grebe | *** | - | - | Before Mar 1 | 4/13 | 5/5 |
Weekly mean spring nocturnal migration activity and direction of movement in the Gulf of Mexico region for the week of 6-12 April, 1995 to 2015. Circular buffers around radar stations represent migration activity scaled to radar reflectivity (a measure of biological activity), with weekly activity represented by size scaled to the activity at KCRP Corpus Christi and seasonal activity represented by colors scaled to the most intense movements of the spring period (L: light, M: moderate, H:heavy); arrows represent mean track direction (a measure of the direction birds are traveling) derived from radial velocity.
Great Plains
Moderate to heavy flights, some of which may be locally very heavy, grace the region for the weekend in advance of a developing low pressure system. The arrival of this system on Sunday and Monday will shut down movements, and in some places create concentrations and local fallouts where nocturnal migrants interact with precipitation. The shut down is short-lived as another round of moderate to heavy flights in favorable migration conditions begin on Tuesday and Wednesday nights. This week’s movements will include good and excellent diurnal movements on the weekend and Wednesday, respectively.
Baird’s Sandpiper. Mike Cameron/Macaulay Library. eBird S35620664.
Species on the Move
Beginning Arrivals What is this?
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Wilson's Snipe | ** | 3/2 | 4/8 | 4/17 | 6/20 | After Jun 30 |
| American Coot | *** | 3/14 | 4/9 | 4/21 | 4/30 | 5/26 |
| Brown-headed Cowbird | ****! | 3/14 | 4/21 | 5/11 | 5/19 | 6/10 |
| Pied-billed Grebe | *** | 3/16 | 4/8 | 4/18 | 4/30 | 5/11 |
| Savannah Sparrow | *** | 3/16 | 4/17 | 4/24 | 5/7 | 6/23 |
| Say's Phoebe | * | 3/23 | 4/14 | 6/11 | 6/26 | After Jun 30 |
| Eastern Towhee | ** | 3/23 | 4/26 | 5/9 | 5/22 | 5/31 |
| Great Egret | *** | 3/24 | 4/8 | 4/24 | 5/8 | After Jun 30 |
| Scissor-tailed Flycatcher | *** | 3/28 | 4/7 | 4/25 | 6/12 | After Jun 30 |
| Little Blue Heron | ** | 3/29 | 4/10 | 4/29 | 5/8 | 5/18 |
| Lesser Yellowlegs | *** | 3/29 | 4/21 | 4/26 | 5/22 | 5/29 |
| Cattle Egret | *** | 3/30 | 4/16 | 6/22 | After Jun 30 | - |
| Northern Rough-winged Swallow | *** | 3/30 | 4/21 | 5/4 | 5/21 | 5/27 |
| Swainson's Hawk | *** | 3/31 | 4/9 | 4/23 | 5/2 | After Jun 30 |
| Chipping Sparrow | ****! | 3/31 | 4/26 | 5/6 | 5/18 | 5/27 |
| Western Grebe | ** | 4/1 | 4/16 | 6/12 | After Jun 30 | - |
| Snowy Egret | *** | 4/1 | 4/12 | 4/27 | 6/29 | After Jun 30 |
| Northern Parula | *** | 4/1 | 4/8 | 5/7 | 5/18 | 5/24 |
| Franklin's Gull | *** | 4/2 | 4/13 | 4/23 | 5/1 | 5/24 |
| Brown Thrasher | ****! | 4/2 | 4/28 | 5/7 | 6/9 | 6/29 |
| Upland Sandpiper | *** | 4/3 | 4/20 | 5/6 | 5/11 | 5/18 |
| Barn Swallow | ****! | 4/3 | 4/22 | 5/18 | 6/29 | After Jun 30 |
| Grasshopper Sparrow | *** | 4/5 | 5/27 | After Jun 30 | - | - |
| Osprey | *** | 4/6 | 4/13 | 4/23 | 5/5 | 5/9 |
| Broad-winged Hawk | *** | 4/6 | 4/20 | 4/29 | 5/21 | 5/27 |
| Prothonotary Warbler | *** | 4/6 | 4/20 | 5/7 | 5/21 | 6/4 |
| Lincoln's Sparrow | *** | 4/6 | 4/28 | 5/4 | 5/14 | 5/21 |
| Eared Grebe | *** | 4/7 | 4/17 | 4/26 | 6/21 | After Jun 30 |
| Cassin's Sparrow | * | 4/7 | 5/1 | 6/13 | After Jun 30 | - |
| Lark Sparrow | ****! | 4/7 | 4/20 | 5/8 | 5/16 | After Jun 30 |
| Yellow-headed Blackbird | ****! | 4/7 | 4/14 | 6/15 | 6/20 | 6/24 |
| White-faced Ibis | *** | 4/9 | 4/18 | 4/26 | 5/23 | After Jun 30 |
| Black-necked Stilt | ** | 4/9 | 4/17 | 4/26 | 5/2 | After Jun 30 |
| American Avocet | *** | 4/9 | 4/17 | 4/25 | 6/23 | After Jun 30 |
| Marbled Godwit | * | 4/9 | 6/5 | 6/13 | 6/21 | After Jun 30 |
| Sora | ** | 4/10 | 4/17 | 5/17 | 6/21 | After Jun 30 |
| Hudsonian Godwit | *** | 4/11 | 4/17 | 4/23 | 4/29 | 5/26 |
| Cliff Swallow | *** | 4/11 | 4/23 | 6/16 | 6/24 | After Jun 30 |
| Yellow-rumped Warbler | ****! | 4/11 | 4/28 | 5/4 | 5/15 | 5/23 |
| Green Heron | *** | 4/12 | 4/23 | 5/14 | 6/5 | 6/11 |
| Black-crowned Night-Heron | * | 4/12 | 6/4 | 6/13 | After Jun 30 | - |
| Peregrine Falcon | ** | 4/12 | 4/21 | 5/4 | 5/16 | 5/27 |
| Semipalmated Plover | *** | 4/13 | 4/20 | 4/25 | 5/24 | 6/1 |
| Semipalmated Sandpiper | *** | 4/13 | 4/21 | 5/15 | 5/24 | 6/2 |
| Forster's Tern | *** | 4/13 | 4/20 | 5/13 | 5/20 | After Jun 30 |
| Bank Swallow | *** | 4/13 | 4/27 | 5/15 | 5/24 | After Jun 30 |
Peaking Arrivals
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Eastern Phoebe | *** | 3/2 | 3/12 | 5/5 | 5/18 | After Jun 30 |
| Common Grackle | *** | 3/2 | 3/13 | 5/21 | 6/11 | After Jun 30 |
| American Pipit | * | 3/2 | 3/14 | 4/19 | 5/7 | 5/18 |
| Northern Shoveler | *** | 3/10 | 3/16 | 4/14 | 5/1 | After Jun 30 |
| American White Pelican | *** | 3/13 | 3/16 | 4/21 | 4/29 | 6/27 |
| Horned Grebe | ** | 3/9 | 3/17 | 4/16 | 5/6 | 5/18 |
| Blue-winged Teal | ****! | 3/11 | 3/19 | 4/23 | 5/23 | 6/25 |
| Great Blue Heron | *** | 3/2 | 3/22 | 4/24 | 5/19 | After Jun 30 |
| Greater Yellowlegs | *** | 3/12 | 3/22 | 4/20 | 4/30 | 5/9 |
| Belted Kingfisher | ** | 3/2 | 3/23 | 4/9 | 5/20 | 6/4 |
| Wood Duck | ** | 3/2 | 3/24 | 5/6 | 5/24 | 6/7 |
| Baird's Sandpiper | *** | 3/14 | 3/27 | 4/24 | 5/24 | 6/2 |
| Double-crested Cormorant | *** | 3/12 | 3/28 | 4/14 | 4/29 | After Jun 30 |
| Pectoral Sandpiper | ** | 3/25 | 3/28 | 5/16 | 5/24 | 5/30 |
| Turkey Vulture | *** | 3/14 | 3/30 | 5/9 | 5/18 | After Jun 30 |
| Field Sparrow | *** | 3/12 | 3/31 | 4/28 | 5/11 | 5/18 |
| Vesper Sparrow | *** | 3/24 | 3/31 | 4/22 | 5/1 | 5/9 |
| Tree Swallow | *** | 3/24 | 4/1 | 5/1 | 6/25 | After Jun 30 |
| Ruby-crowned Kinglet | *** | 3/26 | 4/1 | 5/1 | 5/12 | 5/24 |
| Hermit Thrush | * | 3/23 | 4/2 | 4/22 | 5/10 | 5/18 |
| Louisiana Waterthrush | ** | 3/25 | 4/2 | 5/5 | 5/17 | 5/22 |
| Yellow-throated Warbler | * | 3/17 | 4/2 | 4/23 | 5/20 | 6/5 |
| White-eyed Vireo | * | 3/19 | 4/4 | 5/23 | 6/12 | After Jun 30 |
| Purple Martin | *** | 3/20 | 4/4 | 5/7 | After Jun 30 | - |
| Blue-gray Gnatcatcher | *** | 3/26 | 4/5 | 5/6 | 5/17 | 5/22 |
| Bonaparte's Gull | ** | 3/29 | 4/6 | 4/18 | 5/1 | 5/13 |
| Scissor-tailed Flycatcher | *** | 3/28 | 4/7 | 4/25 | 6/12 | After Jun 30 |
| Pied-billed Grebe | *** | 3/16 | 4/8 | 4/18 | 4/30 | 5/11 |
| Great Egret | *** | 3/24 | 4/8 | 4/24 | 5/8 | After Jun 30 |
| Wilson's Snipe | ** | 3/2 | 4/8 | 4/17 | 6/20 | After Jun 30 |
| Northern Parula | *** | 4/1 | 4/8 | 5/7 | 5/18 | 5/24 |
| Swainson's Hawk | *** | 3/31 | 4/9 | 4/23 | 5/2 | After Jun 30 |
| American Coot | *** | 3/14 | 4/9 | 4/21 | 4/30 | 5/26 |
| Little Blue Heron | ** | 3/29 | 4/10 | 4/29 | 5/8 | 5/18 |
| Snowy Egret | *** | 4/1 | 4/12 | 4/27 | 6/29 | After Jun 30 |
| Osprey | *** | 4/6 | 4/13 | 4/23 | 5/5 | 5/9 |
| Franklin's Gull | *** | 4/2 | 4/13 | 4/23 | 5/1 | 5/24 |
| Say's Phoebe | * | 3/23 | 4/14 | 6/11 | 6/26 | After Jun 30 |
| Yellow-headed Blackbird | ** | 4/7 | 4/14 | 6/15 | 6/20 | 6/24 |
Beginning Departures
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Northern Pintail | ** | - | 3/2 | 3/12 | 6/25 | After Jun 30 |
| Northern Harrier | *** | 3/2 | 3/7 | 3/17 | 4/26 | After Jun 30 |
| Ring-billed Gull | *** | 3/2 | 3/10 | 3/18 | 4/8 | After Jun 30 |
| Dark-eyed Junco | *** | 3/16 | 3/18 | 3/21 | 4/8 | 4/21 |
| American Wigeon | *** | - | 3/2 | 3/24 | 4/27 | After Jun 30 |
| Gadwall | *** | 3/11 | 3/17 | 3/25 | After Jun 30 | - |
| Green-winged Teal | *** | 3/2 | 3/13 | 3/27 | 4/27 | 5/8 |
| Lesser Scaup | *** | 3/2 | 3/17 | 3/28 | 4/29 | After Jun 30 |
| Fox Sparrow | *** | 3/13 | 3/20 | 3/28 | 4/10 | 4/22 |
| American Kestrel | *** | - | 3/2 | 3/30 | 4/26 | 5/5 |
| Killdeer | ** | 3/2 | 3/7 | 3/31 | 5/2 | After Jun 30 |
| Song Sparrow | *** | 3/12 | 3/17 | 3/31 | 4/11 | After Jun 30 |
| Sharp-shinned Hawk | ** | 3/23 | 3/29 | 4/5 | 4/28 | 5/13 |
| Ruddy Duck | *** | 3/2 | 3/16 | 4/6 | 5/5 | After Jun 30 |
| Common Loon | * | 3/16 | 3/24 | 4/6 | 5/8 | 5/14 |
| Belted Kingfisher | ** | 3/2 | 3/23 | 4/9 | 5/20 | 6/4 |
| Northern Shoveler | *** | 3/10 | 3/16 | 4/14 | 5/1 | After Jun 30 |
| Double-crested Cormorant | *** | 3/12 | 3/28 | 4/14 | 4/29 | After Jun 30 |
Ending Departures
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Hooded Merganser | ** | - | - | Before Mar 1 | 3/5 | 4/27 |
| Brown Creeper | ** | - | - | Before Mar 1 | 3/6 | 4/23 |
| Bald Eagle | *** | - | - | Before Mar 1 | 3/10 | 4/7 |
| Ross's Goose | *** | - | - | Before Mar 1 | 3/15 | 4/8 |
| Cackling Goose | *** | - | - | Before Mar 1 | 3/19 | 4/8 |
| Common Goldeneye | *** | - | - | Before Mar 1 | 3/22 | 4/16 |
| Common Merganser | *** | - | - | Before Mar 1 | 3/23 | 4/15 |
| Rough-legged Hawk | *** | - | 3/2 | 3/9 | 3/23 | 4/13 |
| American Tree Sparrow | *** | - | - | Before Mar 1 | 3/28 | 4/14 |
| Redhead | ** | - | 3/2 | 3/14 | 3/29 | After Jun 30 |
| Ring-necked Duck | *** | - | 3/2 | 3/19 | 4/2 | 5/7 |
| Herring Gull | ** | - | - | Before Mar 1 | 4/2 | 4/30 |
| Bufflehead | *** | 3/2 | 3/14 | 3/23 | 4/6 | 5/8 |
| Red-breasted Merganser | ** | 3/15 | 3/19 | 3/26 | 4/6 | 4/13 |
| Ring-billed Gull | *** | 3/2 | 3/10 | 3/18 | 4/8 | After Jun 30 |
| Dark-eyed Junco | *** | 3/16 | 3/18 | 3/21 | 4/8 | 4/21 |
| Fox Sparrow | *** | 3/13 | 3/20 | 3/28 | 4/10 | 4/22 |
| Song Sparrow | ** | 3/12 | 3/17 | 3/31 | 4/11 | After Jun 30 |
West
Friday night will bring a widespread movement across the region, as mostly favorable conditions for migration, punctuated with some precipitation, spawn light to moderate flights in many areas away from the immediate Pacific Coast. The days that follow see greatly restricted flights, as a disturbance moves through the southern half of the region. But light to moderate flights persist in portions of the Great Basin and northern Rockies. By Tuesday night more widespread conditions that are favorable for migration return, with light to moderate flights in most areas away from the Pacific Northwest. Heavier flights are likely along the eastern front of the Rockies, where conditions will be highly favorable for migration. These intents and extents of migration continue to end the period.
White-crowned Sparrow. Chezy Yusef/Macaulay Library. eBird S35705533.
Species on the Move
Beginning Arrivals What is this?
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Cinnamon Teal | ** | 3/2 | 4/7 | 4/19 | 5/8 | 6/6 |
| Northern Rough-winged Swallow | *** | 3/2 | 4/23 | 5/8 | 5/29 | After Jun 30 |
| Whimbrel | * | 3/16 | 4/18 | 4/29 | 5/8 | 5/21 |
| Pacific-slope Flycatcher | *** | 3/16 | 4/25 | 5/31 | 6/22 | After Jun 30 |
| Western Kingbird | *** | 3/19 | 4/30 | 5/15 | 6/4 | 6/10 |
| Cliff Swallow | *** | 3/19 | 4/26 | 6/19 | After Jun 30 | - |
| Common Yellowthroat | *** | 3/19 | 4/7 | 5/19 | 6/11 | 6/16 |
| Caspian Tern | *** | 3/25 | 4/14 | 4/28 | 5/6 | 5/12 |
| Savannah Sparrow | *** | 3/26 | 4/8 | 4/25 | 5/5 | 5/19 |
| Eared Grebe | * | 3/27 | 4/9 | 4/21 | 5/8 | 6/1 |
| Black-throated Gray Warbler | *** | 3/27 | 4/13 | 4/27 | 5/7 | 6/10 |
| Swainson's Hawk | *** | 3/28 | 4/8 | 5/1 | 5/31 | 6/5 |
| Cassin's Vireo | ** | 3/28 | 4/18 | 5/9 | After Jun 30 | - |
| Barn Swallow | *** | 3/30 | 4/23 | 5/19 | 6/1 | 6/12 |
| Nashville Warbler | *** | 3/30 | 4/15 | 4/27 | 5/7 | 6/26 |
| Common Loon | ** | 3/31 | 4/12 | 4/19 | 5/3 | 5/12 |
| Brewer's Blackbird | *** | 3/31 | 4/15 | 5/29 | After Jun 30 | - |
| Yellow-headed Blackbird | *** | 4/1 | 4/10 | 5/14 | 5/30 | 6/3 |
| American Pipit | * | 4/2 | 4/8 | 4/13 | 5/8 | 5/18 |
| Yellow-rumped Warbler | ** | 4/2 | 4/14 | 4/19 | 5/18 | 5/28 |
| Green Heron | * | 4/3 | 4/21 | 5/10 | 5/28 | 6/8 |
| Ash-throated Flycatcher | *** | 4/5 | 4/14 | 5/8 | 6/9 | 6/19 |
| Black-bellied Plover | * | 4/6 | 4/10 | 4/23 | 5/7 | 5/27 |
| Sharp-shinned Hawk | * | 4/7 | 4/10 | 4/13 | 5/3 | 5/20 |
| Willet | ** | 4/7 | 4/9 | 4/30 | 5/6 | 5/10 |
| Dunlin | ** | 4/8 | 4/23 | 4/27 | 5/7 | 5/15 |
| Least Sandpiper | *** | 4/8 | 4/22 | 4/28 | 5/7 | 5/15 |
| Greater White-fronted Goose | * | 4/10 | 4/15 | 4/22 | 5/5 | 5/14 |
| Brant | * | 4/10 | 4/15 | 4/20 | 5/1 | 5/14 |
| Marbled Godwit | ** | 4/10 | 4/16 | 4/25 | 5/6 | 5/11 |
| Western Sandpiper | *** | 4/10 | 4/16 | 4/29 | 5/7 | 5/14 |
| Hammond's Flycatcher | ** | 4/10 | 4/21 | 6/10 | 6/25 | After Jun 30 |
| Chipping Sparrow | *** | 4/10 | 5/6 | 5/14 | 5/21 | 5/26 |
| Forster's Tern | ** | 4/11 | 4/24 | 5/9 | 5/19 | 6/11 |
| Brown-headed Cowbird | ****! | 4/11 | 5/3 | 5/17 | 6/1 | 6/20 |
| Vaux's Swift | *** | 4/12 | 4/23 | 5/8 | 5/12 | 5/21 |
| Bank Swallow | ** | 4/12 | 4/25 | 5/19 | 5/31 | 6/8 |
| Wilson's Warbler | ****! | 4/12 | 4/24 | 5/10 | 6/1 | 6/6 |
| Lazuli Bunting | *** | 4/12 | 4/25 | 5/16 | After Jun 30 | - |
| Hermit Warbler | *** | 4/13 | 4/24 | 5/7 | After Jun 30 | - |
Peaking Arrivals
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Mountain Bluebird | * | 3/2 | 3/9 | 4/10 | 4/23 | 4/27 |
| Violet-green Swallow | *** | 3/2 | 3/17 | 5/18 | 5/24 | 5/29 |
| Rufous Hummingbird | *** | 3/2 | 3/19 | 4/8 | 5/6 | 5/20 |
| Gadwall | * | 3/9 | 3/23 | 4/13 | 5/19 | After Jun 30 |
| Northern Shoveler | * | 3/20 | 3/25 | 4/8 | 5/5 | 6/2 |
| Hooded Oriole | ** | 3/12 | 3/26 | 4/28 | 5/15 | 6/14 |
| White-crowned Sparrow | *** | 3/20 | 3/27 | 4/11 | 4/26 | 5/23 |
| Tree Swallow | *** | 3/2 | 4/2 | 5/12 | 5/29 | 6/11 |
| White-throated Swift | * | 3/2 | 4/3 | 5/29 | After Jun 30 | - |
| Osprey | *** | 3/22 | 4/4 | 4/21 | 4/30 | 5/23 |
| Orange-crowned Warbler | *** | 3/20 | 4/4 | 5/1 | 5/15 | 5/22 |
| Golden-crowned Sparrow | * | 4/1 | 4/5 | 4/15 | 4/28 | 5/15 |
| Black-necked Stilt | ** | 3/28 | 4/6 | 4/28 | 5/10 | 6/4 |
| American Avocet | ** | 3/28 | 4/6 | 4/29 | 5/10 | 6/6 |
| Greater Yellowlegs | ** | 3/25 | 4/6 | 4/16 | 5/2 | 5/11 |
| Black-chinned Hummingbird | *** | 3/16 | 4/6 | 5/17 | 5/30 | 6/10 |
| Cinnamon Teal | ** | 3/2 | 4/7 | 4/19 | 5/8 | 6/6 |
| Common Yellowthroat | *** | 3/19 | 4/7 | 5/19 | 6/11 | 6/16 |
| Swainson's Hawk | ** | 3/28 | 4/8 | 5/1 | 5/31 | 6/5 |
| American Pipit | * | 4/2 | 4/8 | 4/13 | 5/8 | 5/18 |
| Savannah Sparrow | ** | 3/26 | 4/8 | 4/25 | 5/5 | 5/19 |
| Eared Grebe | * | 3/27 | 4/9 | 4/21 | 5/8 | 6/1 |
| Willet | ** | 4/7 | 4/9 | 4/30 | 5/6 | 5/10 |
| Sharp-shinned Hawk | * | 4/7 | 4/10 | 4/13 | 5/3 | 5/20 |
| Black-bellied Plover | * | 4/6 | 4/10 | 4/23 | 5/7 | 5/27 |
| Yellow-headed Blackbird | ** | 4/1 | 4/10 | 5/14 | 5/30 | 6/3 |
| Common Loon | ** | 3/31 | 4/12 | 4/19 | 5/3 | 5/12 |
| Black-throated Gray Warbler | *** | 3/27 | 4/13 | 4/27 | 5/7 | 6/10 |
| Caspian Tern | ** | 3/25 | 4/14 | 4/28 | 5/6 | 5/12 |
| Ash-throated Flycatcher | *** | 4/5 | 4/14 | 5/8 | 6/9 | 6/19 |
| Yellow-rumped Warbler | ** | 4/2 | 4/14 | 4/19 | 5/18 | 5/28 |
Beginning Departures
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Cackling Goose | * | - | - | Before Mar 1 | 5/1 | 5/13 |
| American Wigeon | *** | - | - | Before Mar 1 | 4/14 | 5/17 |
| Canvasback | * | - | - | Before Mar 1 | 4/17 | 4/30 |
| Greater Scaup | * | - | - | Before Mar 1 | 5/5 | 5/21 |
| Bufflehead | *** | - | - | Before Mar 1 | 4/28 | 5/19 |
| Common Goldeneye | *** | - | - | Before Mar 1 | 4/9 | 4/26 |
| Hooded Merganser | ** | - | - | Before Mar 1 | 4/8 | 5/2 |
| Common Merganser | ** | - | - | Before Mar 1 | 4/22 | 5/17 |
| Ruddy Duck | ** | - | - | Before Mar 1 | 5/17 | 6/3 |
| Pied-billed Grebe | ** | - | - | Before Mar 1 | 4/20 | 5/31 |
| Horned Grebe | * | - | - | Before Mar 1 | 5/1 | 5/12 |
| American Coot | ** | - | - | Before Mar 1 | 4/30 | 6/4 |
| Ruby-crowned Kinglet | *** | - | 3/2 | 3/9 | 4/25 | 5/17 |
| Dark-eyed Junco | *** | 3/2 | 3/3 | 3/9 | 4/10 | 4/24 |
| Ring-necked Duck | ** | - | 3/2 | 3/10 | 4/30 | 5/17 |
| Lesser Scaup | ** | 3/2 | 3/11 | 3/15 | 4/27 | 5/21 |
| Surf Scoter | * | 3/15 | 3/18 | 3/21 | 5/3 | 5/21 |
| Green-winged Teal | *** | 3/20 | 3/22 | 3/26 | 5/2 | 5/12 |
| Broad-billed Hummingbird | * | 3/2 | 3/14 | 3/28 | 6/1 | 6/6 |
| Cooper's Hawk | * | 3/2 | 3/14 | 3/29 | 5/14 | 5/26 |
| Northern Shoveler | *** | 3/20 | 3/25 | 4/8 | 5/5 | 6/2 |
| Rufous Hummingbird | * | 3/2 | 3/19 | 4/8 | 5/6 | 5/20 |
| Mountain Bluebird | * | 3/2 | 3/9 | 4/10 | 4/23 | 4/27 |
| White-crowned Sparrow | *** | 3/20 | 3/27 | 4/11 | 4/26 | 5/23 |
| Gadwall | ** | 3/9 | 3/23 | 4/13 | 5/19 | After Jun 30 |
| Sharp-shinned Hawk | * | 4/7 | 4/10 | 4/13 | 5/3 | 5/20 |
| American Pipit | ** | 4/2 | 4/8 | 4/13 | 5/8 | 5/18 |
Ending Departures
| Species | Noticeability | Migrants Begin Arriving | Rapid Migrant Influx | Peak | Rapid Migrant Departure | Last Migrants Depart |
|---|---|---|---|---|---|---|
| Glaucous-winged Gull | ** | - | - | Before Mar 1 | 3/3 | 5/13 |
| Mew Gull | * | - | - | Before Mar 1 | 3/7 | 5/3 |
| Ring-billed Gull | *** | - | - | Before Mar 1 | 3/17 | 5/1 |
| Northern Pintail | ** | - | - | Before Mar 1 | 3/22 | 5/14 |
| Varied Thrush | ** | - | - | Before Mar 1 | 4/5 | 4/27 |
| Hooded Merganser | ** | - | - | Before Mar 1 | 4/8 | 5/2 |
| Common Goldeneye | *** | - | - | Before Mar 1 | 4/9 | 4/26 |
| Dark-eyed Junco | *** | 3/2 | 3/3 | 3/9 | 4/10 | 4/24 |
| American Wigeon | *** | - | - | Before Mar 1 | 4/14 | 5/17 |
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Farnsworth and Van Doren
