Many papers have been written about waterfowl hybrids and a lot of information is available, but there is still great interest in the subject because of identification difficulties and possible confusion with potential vagrants (Perrins 1961--but still up to date!; Gillham & Gillham 1996, 1998) or the problems created by interbreeding (e.g. between introduced and natural populations, Delany 19
...This article is only available to registered users.
To read more, please log in or purchase a subscription.