Look at that radar light up! Here’s a national composite (click the image to see the animation)…look at how the radar stations light up just after sunset, moving west with the setting sun. The last image is from about 10:30pm. Birds are moving all across the country! (all the dark blue circles that “appear” in the animation represent birds reaching altitude enough for the radar to detect them).
The image below is from 7pm last night until 6:30am this morning. It looks like there were some birds over the water after sunrise.