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Do male fish prefer them big and colourful?

Male black-finned goodeid or mexcalpique fish know what they want when they pick a female to mate with; they prefer them big-bellied and as orange as possible. Interestingly, females displaying these traits are the ones most ...

dateOct 10, 2017 in Ecology
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Social environment matters for duck penis size

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 Advances looks at whether ...

dateSep 20, 2017 in Plants & Animals
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