Harrison, J. M & Harrison, J. G / December 1966 – vol. 59, issue 12–550 of 1962, at Millom, south Cumberland, a male Grey Lag Goose Anser anser mated with a female Canada Goose Branta canadensis. The Canada Goose, which was perfectly normal in all its plumage characters, had flown in to join a flock of Grey Lags maintained in a reserve at Millom by the Wildfowlers' Association of Great Britain and Ireland (W.A.G.B.I.). Only one of the resulting hybrid offspring reached... This article is only available to registered users.To read more, please log in or purchase a subscription.