Take a look at the radar loop this evening.
At the beginning you see a few leftover showers over Southwest Washington, then right after sunset (7pm), the screen fills with north to south moving objects. It’s migrating birds…thousands of them in the skies overhead. I first noticed it again about a month ago (as fall approached), but it is quite impressive tonight.
You can read more about it in last spring’s post about the spring migration here: https://fox12weather.wordpress.com/2014/03/07/the-migration-has-begun-thousands-of-birds-overhead-tonight/
Chief Meteorologist Mark Nelsen