I like the concept. Did something similar for my dad for fathers day, but with birds in his front yard. They're all a little over-exposed, to my eye, especially the middle one.
There's also some little spots I'd clean up. Like the dot on the middle ones forehead, the scar or whatever beside the eye of the one on the left, and that one dark eyelash on the bottom of the left one's eye.
The right one seems soft in the lower left corner. Everything else seems sharp, so I wonder if it's an optical illusion.