There are an estimated eighty Socorro doves in European zoos, including those in Burgers' Zoo (Arnhem, Netherlands), where there is a successful breeding program: there have already been six hatchings there. The breeding pair is no longer available, as the female has died and the male is now too old to produce progeny. The coordinator of the breeding program arranged for a new pair; the two hatchlings were born of this match.
The Frankfurt zoo coordinates the European breeding program, which has now moved a number of Socorro doves to a new refuge on Socorro. There is a plan for the centre to release the animals into the wild.
The Socorro dove (Zenaida graysoni) is also known by the names Socorro mourning dove and Grayson dove. This dove is reddish-brown; the male has more prominent colouring. It feeds on seeds, fruit and small insects.