Germany's gay penguins are proud papas after taking in a chick abandoned by a negligent straight couple of penguins at the Bremerhaven Zoo, Advocate.com reported.

The gay penguins, "Z" and "Vielpunkt," adopted a baby chick whose egg they cared for before it hatched.

"Another couple threw the egg out of their batch," the zoo's vet said in a statement. "We picked it up and put it in the nest of the gay penguins."

Z and Vielpunkt babysat the egg for 35 days before it hatched and have continued to watch it since the chick was born on April 25.

Gay penguins like the German pair and like Roy and Silo at the Central Park Zoo, who were the first hatch a fertile egg, are key for scientists who seek to prove that homosexuality is not a choice. The argument being that if homosexuality occurs in nature that it can't be immoral.