Hi, I had Pigeons when I was a kid, I got them as older birds and I remember I could let them out and they would come back. If I were to get Some Pigeons now, ( Unsure what age I can find ) how do I train them to come back? Do they come back at dark like Chickens do? Do they eat chicken feed? Is there certain types of Pigeons I should look for? Stay away from? How many Pigeons are good to keep? Can I mix different types? Can I house them with the chickens?