Predator?

Tom is sitting on the porch watching Who's Up hunt and Kobae sleep listening to a hundred plus songbirds sing their various melodies thinking it's been at least two weeks since he's seen a winged predator of any sort and over a month since he's seen a hawk. Then out of sky comes a larger than normal gray bird swooping in and all the songbirds to include 60 Red-winged blackbirds (now all day visitors) scatter. A Eurasian Collard-Dove lands and starts pecking for food. Within a few seconds all three feeding locations have returned to their soft melodic sounds.