Migration
By Andrew Dreelin, Paul Heveran, Erica Dunn, Andra Florea and Joe Gyekis Guest Authors Sep 16, 2020

Yes, you read the title right— WHITE-breasted Nuthatches! Long overlooked as a humble resident of forests and feeders across North America, the *other* migrating nuthatch is finally getting deserved recognition for its irruptive travels.  Read more...

Migration
By Andrew Farnsworth and Benjamin Van Doren The Cornell Lab Sep 16, 2020

Enormous, and growing, numbers of dead birds discovered in the southern Rockies over the past few weeks have alarmed scientists, conservationists, and advocates alike. The massive mortality events may be a result of intense fires in the western US and the smoke that they have produced.  Read more...

Migration
By Carley Eschliman and Kyle Horton The Cornell Lab Sep 16, 2020

As a reminder to what the team is working on here at BirdCast, we return to a post we wrote last year. With spring upon us and migration in full swing, here is a primer on what we do. We turn weather radar data into information on the numbers and flight directions of birds aloft in order to expand the understanding of migratory bird movement. After several years (and hundreds of posts) describing migration, species on the move, and unique migration events, we want you to have a better understanding of what happens at BirdCast. Here is a brief overview and a behind-the-scenes look at the ways we apply radar data to study bird migration.  Read more...

By Andrew Farnsworth The Cornell Lab Sep 16, 2020

We estimate that more than half a billion birds will take flight tonight from the contiguous US, spanning the central portion of the country from Canada to Mexico.  Read more...

Cyclones
By Andrew Farnsworth and Benjamin Van Doren The Cornell Lab Sep 15, 2020

The active week for tropical systems in the Atlantic Ocean Basin continues, with Hurricane Sally making landfall on the Gulf of Mexico coast. A suite of species like Sooty Tern, Bridled Tern, Magnificent Frigatebird, and Brown Noddy is possible at the immediate coast and well inland. Watch live tracking of bird observations after Sally's landfall.  Read more...

Forecast and Analysis
By Benjamin Van Doren The Cornell Lab Sep 14, 2020

The BirdCast model is predicting high intensity migration for the night of 14 September 2020. We estimate that 405 million birds will take flight tonight across the lower 48, including 50 million birds in the northeast alone. This will likely represent one of the largest migration nights of the year in this region.  Read more...

By Andrew Farnsworth The Cornell Lab Sep 13, 2020

High intensity migration and evolving tropical systems are on deck for this week. We estimate movements 400-500 million birds on each of the coming nights over the continental US. Plus, a very active Atlantic Ocean Basin has a number of tropical systems of the move, entraining and displacing a diversity of birds in the Gulf of Mexico region and Bermuda.  Read more...

Forecast and Analysis
By Andrew Farnsworth The Cornell Lab Sep 10, 2020

The BirdCast forecast model is predicting high intensity migration this evening, and we estimate this migration will comprise more than 400 million birds. The highest intensity movements will occur in Texas and portions of the southern Appalachians and lower Mississippi River valley.  Read more...

By Andrew Farnsworth The Cornell Lab Sep 07, 2020

A major disturbance bringing large temperature drops and snow will move through the northern and central Rockies in the next 48 hours. Local movements of residents and shorter distance migrants are likely as a result, as are concentrations of birds along the frontal boundaries of the cold air mass.  Read more...

Forecast and Analysis
By Andrew Farnsworth The Cornell Lab Sep 03, 2020

More than 200 million migrants will be aloft this evening over the US. These massive movements present some unique opportunities to experience bird migration and act to protect birds by turning off lights at night!  Read more...

Cyclones
By Andrew Farnsworth The Cornell Lab Sep 02, 2020

Nana is approaching the coast of Central America, bringing with it the potential for tropical seabirds and downed overland migrants.  Read more...

Species on the Move
By Andrew Farnsworth The Cornell Lab Sep 01, 2020

Watch for Wilson's Warbler, a species on the move right now (and perpetually given this species' energetic personality), whether you are birding east or west!  Read more...

Migration
By Andrew Farnsworth The Cornell Lab Aug 31, 2020

You've recently watched a small flock of songbirds fly over while watching an autumn morning's migration unfold, perhaps hearing a sharp "tick, tick... tick, tick" even before seeing the birds. Congratulations, you've seen a Purple Finch, this week's species on the move.   Read more...

Cyclones
By Andrew Farnsworth The Cornell Lab Aug 25, 2020

Laura is or will soon intensify to a Major Hurricane with unsurvivable storm surge and extremely dangerous conditions. Current forecasts predict landfall near the Texas-Louisiana border. Avian impacts from Laura's landfall north to Arkansas and east through western Tennessee are likely on Thursday and Friday.  Read more...

Cyclones
By Andrew Farnsworth The Cornell Lab Aug 24, 2020

This week the Gulf Coast of the US will experience landfall of two tropical systems, Laura and Marco. This dangerous twin bill will come with flooding, storm surge, heavy rains, and wind in many areas of the western Gulf of Mexico and lower Mississippi River valley. BirdCast is tracking the arrival of the two storms, and you can monitor with us on two maps tracking bird observations as they occur with landfall.  Read more...

Cyclones
By Andrew Farnsworth The Cornell Lab Aug 21, 2020

Team BirdCast like many other groups is watching the progress of three tropical systems that may make landfall in the US next week. Stay tuned for updates in the coming days!  Read more...

Migration
By Doug Gochfeld and Tom Johnson The Cornell Lab Aug 17, 2020

Could recent August observations of Red-breasted Nuthatch in coastal New York represent the beginning of another strong southbound flight of the species this autumn and winter? Read on to consider patterns, correlations, and ways you can help us understand these movements by submitting your observations!  Read more...

Cyclones
By Andrew Farnsworth The Cornell Lab Aug 16, 2020

Sooty Tern is often the bird of tropical weather systems once ashore (or very close to shore). Numerous records of far-flung individuals pepper the archives of such weather systems, and Hurricane/Tropical Storm Isaias was no exception.  Read more...

Cyclones
By Andrew Farnsworth The Cornell Lab Aug 01, 2020

Hurricane Isaias is forecast to make landfall in the US on the Carolina coast after grazing the Florida Peninsula and passing directly over the Bahamas and nearby islands. This storm will likely produce hazardous conditions where it passes, including damaging winds, dangerous storm surges, and torrential rains with flooding, and it will bring seabirds and other entrained and displaced species ashore far afield from their typical locations. Check out our live sightings map at the end of the post; and follow updates as we make them.  Read more...

Cyclones
By Andrew Farnsworth The Cornell Lab Jul 23, 2020

A tropical system is building in the Gulf of Mexico, forecast to intensify in the coming days and then move ashore in central or southern Texas. Whether this system intensifies to hurricane strength or continues as a tropical storm or depression, it is likely to bring an array of seabirds ashore in southern and central Texas and possibly northern Mexico.  Read more...

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