Are there any other birds, besides chickens, that produce eggs in quantity? I see a lot of farms have ducks, but I've never quite understood the benefit of ducks - are they raised for meat? In addition, my grandparents had peafowl but I never knew what benefits they gave either - peacocks are surely a horror - at least down here in Florida - they are a horrible invasive species that destroys everything - can't imagine anything good coming from anything with Pea in its name.