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Heavy migration over the Northeast and Mid-Atlantic
Last night the winds along the eastern United States were light and primarily out of the north. Over the Northeastern US and mid-Atlantic we saw mostly northwesterly winds turning north by morning, which appears to have triggered the heaviest migration to-date this August. Here’s the radar from sunset last night through 5:00am this morning. Frames […]
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Why you should go to Higbee’s tomorrow morning, and get there early!
The wind forecast (NW at sunset, N during the night, NE by morning… see the circular wind plot graph) Tomorrow is the day after the passage of a cold front (CF+1 on the graph) Most birds are recorded within the first hour-and-a-half after sunrise (see bar graph) Figures from Wiedner, D., P. Kerlinger, D. Sibley, […]
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Widespread migration across the Eastern US
Well, after two nights of sub-optimal wind conditions to our north, things finally shaped up for widespread nocturnal migration last night. Here’s the radar from sunset last night through 5:00am this morning. Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation. Upper-level winds appear to have been the key to […]
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A light flight over the region
A combination of wind direction and wind speed appears to have minimized the number of birds migrating over the northeast last night. Here’s the radar from sunset last night through 6:00am this morning. Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation. While the wind direction was relatively favorable across […]
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Mauricetown swallow roost (and more!)
So Pete Dunne came into my office the late last week and asked me whether I could see the Mauricetown swallow roost on the radar. He monitors this location regularly, and often speaks of the spectacle of tens of thousands of birds taking to the air after sunrise. I knew I had seen roosts before […]