Nice pics, obc!! Your doves are lovely and that front shot of the red-tail is spectacular!! Even your lil sparrow is cute!
I see a fair number of tailless doves, especially in late fall and early spring. When there's a thaw followed by a freeze overnight, their tails get frozen to whatever they're perched on for the night and they pull out the feathers getting free in the morning.
Sometimes they exhaust themselves getting free--I've had them arrive at feeders too tired to eat. Luckily, a little quiet time in a shoebox in a warm place does a lot to rejuvenate them and they all recovered.