Science News - Freaky Friday Lake ducks The male lake duck is in the 3% of birds that have penises. More curiously, it has the longest penis of all vertebrates in comparison
Why are duck penises corkscrew-shaped and how do they mate? | BBC Science Focus Magazine
Prolapsed Phallus in Ducks | BackYard Chickens - Learn How to Raise Chickens
Argentine Blue-bill, Argentine Lake Duck or Argentine Ruddy Duck
Male ducks worry about penis size too according to study | Boing Boing
Duck Penis Length Depends on Other Guys | WIRED
There is a Type of Duck That Sometimes Lassos its Potential Mates with its Penis
What : r/Damnthatsinteresting
How Do Ducks Mate? | Sciencing
In male ducks, social competition spurs changes in genitalia | YaleNews
Duck penises grow bigger when males spend time together | Daily Mail Online
The size of a duck's penis depends on the company it keeps
Male ducks reproductive organs can be the length of their entire body .. anyone need a wine opener? : r/Damnthatsinteresting
Why are duck penises corkscrew-shaped and how do they mate? | BBC Science Focus Magazine
Why are duck penises corkscrew-shaped and how do they mate? | BBC Science Focus Magazine
Male Ducks Penis Length Get Longer the More Time They Spend Together
When male ducks compete, their penises get bigger - Futurity
Weird Animals on Twitter: "Argentine lake ducks have the longest penis of all vertebrates, which is normally coiled but when erect, it can reach the same length as the duck's body! (Photos:
Evidence of phenotypic plasticity of penis morphology and delayed reproductive maturation in response to male competition in waterfowl
Ducks who hang out in big groups have larger penises
Do Birds Have Penises? | Bird Reproduction | Bird Spot
Lake duck - Wikipedia
Duck Penises Vary a Lot in Size And Growth, And That's Actually Really Bizarre : ScienceAlert
Lake duck - Wikipedia
Duck penis plasticity – yes you read that right | The Waterthrush Blog
