Argentine lake ducks possess the longest penis of all birds. The duck itself measures some 40 cm. How long is its penis?

Explanation

Argentine lake ducks might be small, but the male possesses the longest penis among all bird. The bird measures around 40 cm from top to toe - the same length as its corkscrew penis when it is unwound. The tip of the penis is soft and brush-like and is used to brush off the sperm of earlier suitors. He can also use his penis as a lasso to capture escaping females.