When two different species procreate, hybridization is at play. It is a practice that is not uncommon in the wild but is far ...

Geese are long-necked members of the Anatidae family known for their loud, honking calls. Many species, like the Canada goose ...

In Portland, Ore., two distinct species of geese have paired up and laid eggs. It's not completely unheard of for a Canada goose and a white-fronted goose to mate -- but it's unusual.

A Chinese domestic geese is pictured at the Golden Acre Park Nature Reserve in Leeds, England. The breed is descended from the wild swan goose, a species native to China.

A male greater white-fronted goose, right, protects a nesting female Canada goose, left, in this video screenshot of an unusual pairing of two different species of geese at Blue Lake Regional Park ...

Both species are white with black outer wings, but snow geese are noticeably larger than Ross’s geese. And in Colorado snows outnumber Ross’s about a thousand to one.

An unusual pairing of two different species of geese — a greater white-fronted goose, left, and a Canada goose, right — built a nest together in Blue Lake Regional Park.