Yellow-rumped Warblers in the Backyard

I've seen a lot of interesting birds in the last few months, both with traveling out of state and on local field trips. Sometimes it is easy to forget that there are times when the birds will come to you. I haven't had a lot of chances to sit in the backyard, but the falling leaves are forcing me to do some work out there. While I was doing the requisite yardwork, I remembered how surprised I was to find that there were some cute birds practically under my nose. In particular, a dozen or so Yellow-rumped Warblers (Setophaga coronata) spend the off-season in my Mulberry trees. I just don't see them as much until the leaves fall.

Of all the backyard birds, only the Mockingbirds seem less concerned with my presence. There are lots of finches and house sparrows, but they retreat if I come out on the porch. But the warblers don't seem to change their behavior. If anything, judging from the top picture, they are copping a bit of an attitude!