Re-Pairing Pigeons?

[Nature Gurl]

I have a pair of pigeons that bonded this season but 3 clutches in a row have been fails. I want to pair up the hen with a new mate. What would be the best way to go about this?

 

[Hokum Coco]

I have a pair of pigeons that bonded this season but 3 clutches in a row have been fails. I want to pair up the hen with a new mate. What would be the best way to go about this?

Introduce the new couple and after a day or two confine them to a enclose cage.