May 23, 2020Migration alert: coastal mid Atlantic and Long Island, 22 May 2020A stationary front in the Carolinas, evolving into a cold front and moving offshore with some strong storms and southerly flow in advance of its movement, could make for some interesting birding along the immediate mid Atlantic and Long Island coasts.
May 22, 2020Major fallout and morning flight event on Cape Cod, Massachusetts on May 16th, 2020A massive migration event occurred on the Massachusetts coast on the morning of 16 May 2020. Several observers were fortunate to be on the ground in the right place and the right time. Here’s the story!
May 21, 2020Migration alert: West Coast Wind, 22-24 May 2020The passage of an unusually intense late May cold front will result in strong northwest winds along the Pacific Coast through the weekend and could bring pelagic goodies to shore.
May 21, 2020Migration update: northeastern US progress, 21 May 2020Spring 2020 has seen some anomalously low temperatures in the northeastern US, and no exception is the coolest May going back to the 1990s. But changes are coming this weekend.
May 18, 2020Migration Alert, mid Atlantic and New England: possible migration stories for 18-21 May 2020Although Tropical Storm Arthur is not predicted to make landfall, winds associated with the system’s passage will impact the coastal US from the Carolinas through southern New England in the coming days. These winds, depending on location, may be sustained at 20-30 knots for several days, and could bring an array of typically pelagically distributed species ashore.
May 15, 2020Migration Alert, Pacific weather, 17-18 May, and shorebirds: “comes a time when you’re drifting …”17-19 May 2020 may bring an interesting shorebird event to the Pacific Coast of North America. An approaching strong storm system well timed to coincide with movements of spring shorebird migrants in the eastern Pacific could entrain and displace an array of unusual species.
May 14, 2020Migration Alert: northeastern North America flood gates open, 14-18 May 2020Despite scattered medium to high intensity movements in the past 7-10 days in the northeastern US, punctuating some otherwise abysmally and anomalously cool conditions, tonight will see a significant change. Medium to high intensity movements are predicted across a wide swath of the region, including in areas where fallouts and concentrations may occur as a result of birds interacting with rain.
May 8, 2020Migration (or not) Alert, sponsored by the polar vortexGlobal Big Day is here, and depending on your region you may have an exciting or depressing migration experience brewing: enter the polar vortex, shutting down movements in much of the East and spawning movements in the far West.
May 5, 2020Migration event: mortality on the night of 24-25 April 2020 … offshore … on a cruise shipBirdCast reports on many aspects of bird migration, and sadly one scenario we encounter is mass mortality during migration. For example sometimes birds are downed when migrating over water, only to be found in the stomachs of tiger sharks; other…
May 1, 2020Species on the move: early MayWe are nearing the window of peak migration through the US, and many species are on the move!
May 1, 2020Migration alert: Central US, 30 April – 1 May 2020Medium to high intensity migration spanned the latitudinal breadth of the central US last night.
May 1, 2020The picture is worth three billion birds: peak migration timing for the contiguous USPeak migration periods in many areas of the contiguous US are approaching, and we can visualize the approaching waves of migrants in space and time.
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BirdCast is made possible by the participating scientists at the below institutions, and many other contributors.



