Of the second set, the first is a Lark Sparrow, then Tennessee Warbler (though the tail spots are throwing me off), then a White-crowned Sparrow. The last one I "think" is an immature Cooper's Hawk based on the size and thickness of the legs, but it could be a Sharp-shinned Hawk. It is hard to judge size from the photo. Sharp-shinneds are generally about the size of a jay, the Cooper's about the size of a crow. Hope that helps. BN

Possibly a starling pair? These birds usually breed earlier and do build their nests in such places. Very aggressive birds.

Looks like an Orchard Oriole. Their nests are not as pendant as Baltimore Oriole.

ANY READERS, DISREGARD THIS POST. I subsequently put this in the bird watching forum where it belongs. If I can delete this post, I have not figured out how.