Depending on where you live in the world, the ruddy duck is either a cute bundle of fun or a despised nuisance. In the United States, this perky duck is beloved for both its peculiar name and its ...

You can't fault the male ruddy duck for effort. As soon as spring has sprung, he devotes his days to wooing the female of the species, trying to persuade her that he should be the one to father her ...

With his handsome chestnut plumage and rapacious sexual appetite, the ruddy duck has long been designated a ruddy pest. Every year, the promiscuous male of the British species flies south to Spain ...

Most birds lack genitalia, but male ducks are known for their long, spiraling penises, which have evolved through an ongoing cat-and-mouse game with females. A new study from The Auk: Ornithological ...

This article contains affiliate links. We may earn a small commission on items purchased through this article, but that does not affect our editorial judgement. A DECADE-long cull has succeeded in ...

“The ducks would appear in flocks, darkening the air…” William Heath Davis; Yerba Buena (San Francisco). c. 1846. Our winter ducks are getting ready to take flight for their summer breeding grounds.

Male ducks respond to sexual competition by growing either an extra-long penis or a nub of flesh, a new study finds. The unusual phenomena occurred in two species studied: the lesser scaup (Aythya ...

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