Arthur Cleveland Bent, one of America's greatest ornithologists, wrote the following:
"The bluebird is well named, for he wears a coat of the purest, richest, and most gorgeous blue on back, wings, and tail; no North American bird better deserves the name, for no other flashes before our admiring eyes so much brilliant blue. It has been said that he carries on his back the blue of heaven and the rich brown of the freshly turned earth on his breast; but who has ever seen the bluest sky as blue as the bluebird's back?"
There, do you see what I mean about the beaks being wide open? That is a tufted titmouse in the top photo and one of the bluebirds in the bottom photo. No more photos after this, I said, "Have at it, my little bird friends, bathe and drink in that cool water, it is all yours and I will not disturb you." And with that, I closed my blinds and left them in peace.
The quote that I gave to you above from Arthur Cleveland Bent? You should look him up and read about him, he was really a businessman who took a lifelong interest in birds and studied them and became quite an expert in ornithology. He wrote 21 volumes of the Life Histories of North American Birds...yes, that is correct, 21 volumes. That is a lot of observation and study, but I'll just bet that all of his business dealings didn't amount to all the joy that he got from his birds.
Birds are free! Observe them and enjoy them!