Absolutely Lesser Goldfinch. By the way, I don't know how much time you spent looking at warbler pics, but you would have saved yourself that effort by noting the bill shape: warblers have much thinner bills. Bill shape and size is often a good clue to point you in the right direction; bright colour patterns you'll likely remember without trying, but the bill really needs to be looked at (unless we're talking about a toucan or spoonbill etc). Just a friendly hint. -O-

Might be an Eastern Phoebe. Looks like it has the "Phoebe smudge" on the sides of its chest & a thin eye ring.

As whwo said: Yellow-rumped Warbler is a good guess. The winter plumage of the males is much more muted - check the adult female on the bottom of the All About Birds link. Claire

Wow, you are Right! I didnt realize the females looked like this but i just looked it up! Thank you so much! We have alot of brown headed cowbirds so this makes sense.