However , this species breeds well in captivity , and has been successfully re-introduced ; in NUMBER@1 it was estimated that there were NUMBER@2 birds in the wild , as well as NUMBER@3 in wildfowl collections and zoos .

However , this species breeds well in captivity -LRB- zoos and bird parks -RRB- , and has been successfully re-introduced There are also good numbers in wild bird collections .
