Upset Blue Jays & Early Migrants

Blue Jays were squawking up a storm this morning, and had the other little birds worked up too. I couldn't see the cause of the disturbance, but it was most likely a hawk - I've seen several Broad-wings in the neighborhood lately. Scanning the sky from my back fence this morning produced 1 Anhinga, 1 Black Vulture, and 2 Broad-winged Hawks. Also had a couple of early passerine migrants along the driveway (a Red-eyed Vireo and and a briefly glimpsed Yellow-breasted Chat).