Topic: mating

(Getty/kerkla)

Female parakeets want brainy mates

Therese Koch - Massive Science
Queensland Museum: Gary Cranitch

Joanna Rothkopf
(<a href='url to photographer'>Pakhnyushcha </a> via <a href='http://www.shutterstock.com/'>Shutterstock</a>)

Mice are tiny, quiet singers

Joanna Rothkopf
Ginnifer Goodwin, Jeanne Tripplehorn, Bill Paxton and Chloë Sevigny in "Big Love" (HBO)

Jenny Kutner
(<a href='url to photographer'>Villiers Steyn</a> via <a href='http://www.shutterstock.com/'>Shutterstock</a>)

Joanna Rothkopf
Salon logo

Sarah Gray
(Tom Reichner)

Prachi Gupta