Forecasts

Regional Migration Forecast: 13-20 October 2017

Early and late period migration conditions will be favorable for light to moderate flights in the West that feature Sharp-shinned Hawk, Belted Kingfisher, Northern Flicker, Ruby-crowned Kinglet, Yellow-rumped Warbler, Western Meadowlark, Golden-crowned Sparrow, and Fox Sparrow, while the passage of a significant frontal boundary brings moderate to very heavy flights of Cooper’s Hawk, Franklin’s Gull, Belted Kingfisher, Northern Flicker, Brown Creeper, Ruby-crowned Kinglet, Savannah Sparrow, Le Conte’s Sparrow, Song Sparrow, and White-throated Sparrow to the East.


Live tracking of birds associated with Hurricane Nate’s remnants

Hurricane Nate came ashore in Mississippi late Saturday night and early Sunday morning. Although this storm did not pack the strong winds or very heavy rains of recent hurricanes in the Gulf of Mexico or Caribbean, all such storms are dangerous and require the utmost respect in terms of putting safety first (particularly with respect […]


Regional Migration Forecast: 6-13 October 2017

Pulses of moderate movements that feature Cackling Goose, Western Grebe, Herring Gull, Northern Flicker, American Robin, Yellow-rumped Warbler, and White-crowned Sparrow will be the norm for the first half of the period in the West, while late period moderate to very heavy flights featuring Cooper’s Hawk, Peregrine Falcon, Marsh Wren, Sedge Wren, Gray Catbird, Pine Warbler, Yellow-rumped Warbler, Eastern Towhee, and Nelson’s Sparrow will occur in the East after the passage of the remnants of Hurricane Nate. Hurricane Nate will bring the potential for Gulf of Mexico pelagic species far inland in the first half of the period.


Regional Migration Analysis: 30 September – 6 October 2017

Moderate flights that featured Snow Goose, Greater Scaup, Eared Grebe, Ruby-crowned Kinglet, Hermit Thrush, and Golden-crowned Sparrow were the norm in many areas of the West this week, while several pulses of heavy flights occurred in the East and featured Ruddy Duck, Yellow-bellied Sapsucker, Ruby-crowned Kinglet, Rusty Blackbird, Fox Sparrow, Swamp Sparrow, Harris’s Sparrow, and Purple Finch.


Regional Migration Forecast: 29 September – 6 October

Favorable migration conditions from mid weekend through the middle of the work week bring light and moderate flights featuring Greater White-fronted Goose, Cooper’s Hawk, Red-shouldered Hawk, Black-bellied Plover, Townsend’s Warbler, and Lincoln’s Sparrow to the West this period, while moderate to very heavy flights that feature Swainson’s Hawk, American Golden-Plover, Northern Flicker, Eastern Phoebe, Blue-headed Vireo, Palm Warbler, and Magnolia Warbler grace the East for the first half of the period in advance of less favorable migration conditions building in many areas later in the period.


Regional Migration Forecast: 22-29 September 2017

Favorable migration conditions dominate the period in the West, where light to moderate movements featuring Common Merganser, Cooper’s Hawk, Red-shouldered Hawk, Black-bellied Plover, Townsend’s Warbler, Brewer’s Blackbird, and Savannah Sparrow will be widespread, while favorable migration conditions become widespread in the latter half of the period in the East, with moderate to very heavy movements featuring Osprey, Broad-winged Hawk, Sora, Northern Flicker, Gray-cheeked Thrush, Black-throated Blue Warbler, Ovenbird, American Redstart, and Clay-colored Sparrow.


Regional Migration Analysis: 15-22 September 2017

Moderate to locally heavy flights occurred in many areas of the West this period and featured Cackling Goose, Greater White-fronted Goose, Ring-necked Duck, Merlin, American Pipit, Fox Sparrow, Golden-crowned Sparrow, and Lincoln’s Sparrow, while moderate to locally very heavy flights occurred in the East, featuring Sharp-shinned Hawk, Gray-cheeked Thrush, Ruby-crowned Kinglet, Yellow-rumped Warbler, Palm Warbler, Savannah Sparrow, Harris’ Sparrow, White-crowned Sparrow and White-throated Sparrow.


Regional Migration Forecast: 15-22 September 2017

Pulses of favorable migration conditions this week in the West will bring moderate flights featuring Turkey Vulture, Pectoral Sandpiper, Parasitic Jaeger, Common Tern, Mountain Bluebird, Summer Tanager, and Orange-crowned Warbler, while the East experiences scattered moderate to heavy flights featuring Eastern Wood-Pewee, Yellow-bellied Flycatcher, Red-eyed Vireo, Blue-headed Vireo, Swainson’s Thrush, Magnolia Warbler, and Common Yellowthroat when conditions allow. Another tropical system off the Atlantic coast brings potential for interesting observations, as does a tropical system moving across the Gulf of California and into the southern Rockies and western Texas.


Regional Migration Analysis: 8-15 September 2017

Moderate movements were the norm in many areas of the West this period and featured Say’s Phoebe, American Pipit, Ruby-crowned Kinglet, Townsend’s Warbler, Fox Sparrow, and Lincoln’s Sparrow, while moderate to heavy flights featuring Sharp-shinned Hawk, Merlin, Ruby-crowned Kinglet, Swainson’s Thrush, Gray-cheeked Thrush, Magnolia Warbler, Palm Warbler, and Yellow-rumped Warbler dominated the early and late days of the period in the East. Hurricane Irma brought a nasty dose of devastation to portions of the Southeast, while carrying a large array of storm-borne vagrants.


Hurricane Irma’s impact on birds

Hurricane Irma will transport numerous species of birds far from their normal haunts. This is a dangerous storm that has already devastated many areas of the Caribbean, and it is forecast to make landfall in the US this weekend. Our hearts go out to those affected by this storm and the recent Harvey, and we hope that all those still in the path of this storm heed all warnings from the National Hurricane Center. Significant storms like this often trap (or ‘entrain’) birds in their circulation, depositing them far from where they originated. We still do not fully understand many of the mechanisms involved in birds getting ‘entrained’ and then deposited by storms, which is one reason why Team BirdCast (and many others) are interested in sightings associated with these storms.


Regional Migration Forecast: 8-15 September 2017

Light to moderate movements featuring Sora, Pacific-slope Flycatcher, Warbling Vireo, House Wren, Swainson’s Thrush, Common Yellowthroat, and early Golden-crownd Sparrows will be widespread from Saturday to Wednesday in the West, while two pulses of favorable migration conditions sandwiched around Irma will bring heavy flights featuring American Golden-Plover, Least Flycatcher, Swainson’s Thrush, Yellow-throated Vireo, Blue-gray Gnatcatcher, Ovenbird, and Chestnut-sided Warbler in the East. Irma comes ashore after devastating the Caribbean, bringing with it a large haul of pelagic and nearshore species.


Regional Migration Analysis: 1-8 September 2017

Light to locally heavy flights, particularly in the first half of the period, occurred in the West and featured Common Loon, Black-bellied Plover, Say’s Phoebe, Swainson’s Thrush, White-crowned Sparrow, and Lincoln’s Sparrow, while numerous moderate to heavy flights featuring Gray-cheeked Thrush, Swainson’s Thrush, Blackpoll Warbler, Tennessee Warbler, Orange-crowned Warbler, Wilson’s Warbler, and Lincoln’s Sparrow were the norm across the East following the passages of a significant frontal boundary.


Regional Migration Forecast: 1-8 September 2017

Pulses of early and mid period favorable migration conditions will bring similarly time pulses of moderate flights to many areas of the West featuring American White Pelican, Killdeer, Elegant Tern, Cassin’s Vireo, Yellow Warbler, and MacGillivray’s Warbler, while a significant mid period cold front will spawn moderate to very heavy flights in the East featuring Buff-breasted Sandpiper, Common Nighthawk, Least Flycatcher, Olive-sided Flycatcher, Warbling Vireo, numerous warblers, and Bobolink. As the remnants of Harvey plod through the eastern US early in the period, a new and currently strong tropical system (Irma) will be approaching the southeastern US by the end of the period; BirdCast will be watching closely.


Regional Migration Analysis: 25 August – 1 September 2017

Continental Summary Light to moderate movements were the norm in the West and featured American Wigeon, Northern Pintail, Green-winged Teal, Wilson’s Warbler, Townsend’s Warbler, and Green-tailed Towhee, while moderate to locally heavy flights were common in the East and featured American Golden-Plover, Swainson’s Thrush, Canada Warbler, Nashville Warbler, Bay-breasted Warbler, and Baltimore Oriole. Hurricane Harvey […]


More Heavy Weather: Harvey lumbers on

Hurricane Harvey came ashore on the central Texas coast last week with an almost unimaginable combination of destructive winds and rain. Team BirdCast has been tracking the avian fallout from this storm, perhaps a brief respite for some to escape from the horrible scenes of the devastation in Harvey’s wake.


Photographs of birds displaced by Hurricane Harvey

Hurricane Harvey’s path of destruction has seen unprecedented and catastrophic events in coastal Texas. Some birders have been out safely documenting what they have seen, and numerous typically pelagic or near shore species have been displaced far inland from the coast.


Live Map of Birds Displaced by Hurricane Harvey

Team BirdCast monitors birds and their associations with hurricanes when we can, as they provide rare opportunities to study entrainment and displacement of birds. Such storms are dangerous in the extreme, no matter what intensity, and Hurricane Harvey proves no exception. This storm is coming ashore as a Category 4 Hurricane, very strong and very dangerous!


What Do Birds Do During a Total Eclipse? Observations from eBird and Radar on August 21, 2017

Approximately every 18 months a total solar eclipse is visible somewhere on the surface of the Earth. During previous total solar eclipses, numerous observers have reported interesting animal behavior—especially describing birds. With the advent of citizen science and projects like eBird, we now have the opportunity to examine bird behaviors as reported by a large number of observers almost immediately and at a much grander scale.


Migration Alert: a dangerous Hurricane Harvey approaches the Texas coast

Hurricane Harvey is rapidly intensifying in the Gulf of Mexico. This dangerous storm is forecast to strike the Texas coast on Friday night or Saturday morning as a major hurricane and then meander in the immediate vicinity of the coast for several days. Entrainment and displacement of seabirds is highly likely.


Regional Migration Forecast: 25 August to 1 September 2017

Moderate movements featuring Northern Shoveler, Killdeer, Belted Kingfisher, Warbling Vireo, MacGillivray’s Warbler, Yellow Warbler, and Western Tanager are likely in many areas of the West, while the East will see scattered moderate to heavy pulses that feature Blue-winged Teal, Common Nighthawk, Least Flycatcher, Eastern Wood-Pewee, Yellow Warbler, Chestnut-sided Warbler, and Summer Tanager. The dangerous Hurricane Harvey will bring typical Gulf of Mexico bound seabirds and near shore species to inland locations from Texas and Louisiana to Arkansas over the course of the week.


Toggle Grid