S. Florida - small flier, hawks, warbler IDs needed (1 Viewer)

Back again with yesterday's haul - a few that I need some help on, with my tentative IDs for those I've got a guess on. As always, I appreciate any help in confirming identifications or correcting any I've gotten wrong. And I've got one warbler-type bird I only caught a glancing shot of, which I'm hoping some of the experts here might know what it is. Here goes:

1. This hawk I'm thinking is a younger cooper's hawk - it looked fairly medium to large in size, but the tail looks way too long for a juvie red-shouldered:
http://www.pbase.com/image/141203029/original

2. This hawk on the other hand seemed more like red-shouldered, based on tail length and pattern - but the slate-greyish shadowing to the head was throwing me off, as I don't normally see that on red-shouldereds around here - and there's also the absence of any noticeable red on the 'shoulder'. It was a medium to large sized hawk, so I didn't think sharp-shinned:
http://www.pbase.com/image/141203028/original

3. I was also trying to get ID shots of the dozens of tiny fast little birds that were darting around - often I get tree swallows, but these looked different when I blew up the photos and got a look at them...I wondered if they might not have been purple martins but the color isn't picking up as it was overcast at the time:
http://www.pbase.com/image/141203023/original

http://www.pbase.com/image/141203022/original

http://www.pbase.com/image/141203019/original

4. The last one is the photo that I've linked to this post - it's a rear-view only - I saw this one darting through the underbrush and was taken by the bright greenish yellow color over the whole body and wings. I had been seeing palm and yellow-rumped warblers and blue-headed vireos throughout this area, and this one clearly stood out as much more yellow. The only thing I could come up with was possibly a pine or prairie warbler, but I was also told that baltimore orioles had been seen around and wondered if this could be a female of that species:

1:juvenile cooper's.
2:red-shouldered
3urple martin
4:?, but some kind of warbler for sure.

Agree on all, incl. the ?

It's either a Yellow Warbler or one of those funny yellow-green Orioles. Or maybe even a Cape May or Pine but I forget what they look like on the back.

#4 looks to be a Prairie Warbler. Yellow would have yellow tail sports (these are white). Pien would have more bold white wingbars, and a paler whitish vent.

Andy

#4 is a Prairie Warbler, regular winter resident in interior locations of south Florida.

Carlos

Many thanks all for the confirms - glad to hear I was right on the first ones. And thanks for the prairie warbler confirm - that was one possibility I considered as I've photographed prairies down here last year, but this one looked a wee bit larger than past ones I've seen, and seemed to have less striping on the sides of the head. Without a better ID of it though, I'll take prairie as a good likelihood.