Mute Swan x domestic Goose | Hybrid birds | Flickr
Bird Hybrids on Twitter: "Apparent Canada Goose x Mute Swan hybrids. They were reported here last year too. Anyone at @WGHgdns confirm if last year's young survived? https://t.co/jESXDKouct" / Twitter
Canada x Swan Goose hybrid (Branta canadensis x Anser cygn… | Flickr
Bird Hybrids: Swan Goose x Canada Goose
PDF] Photographic documentation of a Swan Goose x Snow Goose Anser cygnoides x Anser caerulescens hybrid and its offspring with a Barnacle Goose (Branta leucopsis) – a unique three-species cross | Semantic