I used to enjoy raisng pegions. I had over 10 pairs and they used to multiply alot. it was fun watching them bathing in a bath bowle and flipping their wings to dry.
The males have rituals and protocols when they chase females. The female usualy lays 2 eggs.
I used to have difficulty telling the male from female, i once saw a male doing the rituals around another female so i put them in one house together. To my surprise the next morning I found 4 eggs in the nest 2 from each!.