Doves used to make rather messy nests under the eaves of my mom's patio cover. But, they are happy to accept pots and such to nest in!
I think that they have made the connection that, after you put food out, birds come to eat. They were just encouraging them to hurry up, it's chow time! I can picture them with red bandanas, cowgirl hats, and ringing a triangle! Maybe they need a little bird feeder chuck wagon!
Love All Life; Thank You For Posting! :)