Why are there no interbreed birds such as a duck and a goose making a guck or doose, similar to a liger? - Quora
Swan Goose (Domestic type) x Canada Goose (hybrid) - eBird
Anseriformes – Avian Hybrids
Canada goose hybrid hi-res stock photography and images - Alamy
Swan Goose x Canada Goose (hybrid) - eBird
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
Dr Dani Rabaiotti on Twitter: "I saw a really weird goose this morning. Looks like a Canada goose x Greylag goose hybrid? Bird Twitter is this a thing? https://t.co/iwYpZ9f1zy" / Twitter
Swan/Graylag Goose (domestic type)] x Canada Goose (hybrid) – Birds of Nebraska – Online
Is This a Swoose? at DVinfo.net
Canada X domestic swan goose hybrid | Project Noah
Mute Swan x domestic Goose | Hybrid birds | Flickr
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
Canada X domestic swan goose hybrid | Project Noah