blue
They mate, and lay eggs.
yes
No pigeons that eat extra human food don't lay more eggs.
Pigs do not lay eggs, they are mammals and give birth to live piglets.
Yes, usually powder blue. In rare occasions they are white.
The color of a female robin that I am aware of is, red and blue. Blue robins lay light blue eggs.
yes chickens can lay blue, green, red even purple eggs
five to six times ..
They could have egg all year round. The incubation period for common pigeons is 17 to 19 days. The female sits on the egg from late afternoon through the night until about 10AM. The male then takes over and does the day shift. Once the eggs hatch, both parents feed the young squabs.
The color of the chickens earlobes is usually an indicator of what color egg they will lay. Red earlobes - Brown, Blue, or Green eggs Blue earlobes - Blue or Green eggs White Earlobes - White eggs
Pigeons lay 3 - 5 eggs a year and can lay more than 1 egg in the space of a day, in some cases.However the eggs must be fertilized by an egg to even have a chance of hatching.