Paints in the animal world

I continue to observe the habits of birds in particular starlings.
Thanks for your comments, they also help me learn something new.
For example, yesterday, thanks to the commentary, I drew attention to the fact that the nesting of the quail.
It turns out that nesting in hollows is as typical for them as nesting in birdhouses.
At us they only and lodge in hollows, likely, because it is a lot of them :)

I invite you to see some examples: