Yellow-Rumped Warblers

I've had a handful of Yellow-Rumped Warblers setting up residence in my Tallow Tree lately.  I know these are seen as invasive trees, but until I get some more berry producing bushes and trees, I'll keep it for now.  A pair of Yellow-Rumped Warblers have also set up semi-residence with a nest.  It looks like they are using an old nest from another bird for some shelter here and there.  Call me crazy, but I could swear that on the right side of the nest in the photo there is a fragment of a piece of $20 Monopoly money paper!

And in the last photo, you can see one of them peeking out the side of the nest...

So what kind of birds are you seeing outside these days?  Be sure to mention where you are.