Sat in my living room today and watched this little girl defend "her" feeder from a boy that just wouldn't take the hint and go away! She won the war after about an hour, then sat on top of the feeder for several more hours, moving only to feed.
Once the weather warms up, I'll set up other feeders around the yard so they all get a chance to feed when they want. So far, I've seen two different females and (I think) two males. Hopefully, they'll bring the babies to the feeders starting around the end of June!