diamond dove wanted

I have a lone male in a jumbo-size cage and he builds a nest every day. I looked for 2 years for a female that had been rescued from overcrowded conditions, as he was. However I have not found a rescued female Diamond Dove. I am actually not going to breed them, just want him to be happy...

Would like companions for my two male Diamond Doves who live in a giant indoor aviary with lots of fresh millet, actually they also get fresh fruit, veggies and a super nice and clean area to live.