The only crow-family birds I've seen here are cowbirds (we call them "skells"; they are brood-parasites. They lay their eggs in other birds' nests, sometimes kill the other eggs, and cause the nesting birds to raise their cowbird chicks.) Quite aggressive, though I've never seen them harass any raptors - and I've got a group of quite large Harris Hawks that frequent my acreage daily. The turkey vultures just show up once in a while.Here in Colorado harassment of raptors seems common especially by corvids, both in flight (even to the point of physical contact) and around a tree perch, where birds will work their way ever closer. (Any corvids in that Arizona desert?)
Cowbirds are not considered by many to be very good birds. They have been implicated in the decline of several endangered species. They blow through here during a summer migration, it seems. Often arriving at the feeders in groups of up to twenty or so. Acting like bullies. I don't treat them kindly, is all I'll say. Coyotes and hawks don't mind eating them.
Haven't seen any full blown crows here, though.
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