Hubbell Pigeons $15 I have decided to sell more pair of Muttons, $30 per pair or $15 each for young unpaired Thank you

My birds will not mate or lay an egg. What can I do? Hi there, this is my first post. I have 2 utility king pigeons of opposite sex. I don't know the exact age but they arrived looking to be adults. I have had them for several months, and I have never seen them mate or lay an egg. I have...