I started The Big Sit! at midnight. Not long after midnight, my dad and I heard the first bird of the day, a Chipping Sparrow giving its flight call. Not long after, we heard a few more Chippies and a few Swainson's Thrushes giving their flight calls. Looking at the radar, the birds are moving in massive numbers, which hopefully means the birding will be good today.
I'm off the the circle again, after this 10 minute break... and don't expect to hear from me until tonight.