Male Lizards Prefer More-Feminine Lizards to "Bearded Ladies," New Research Finds

Male Lizards Prefer More-Feminine Lizards to "Bearded Ladies," New Research Finds

A female fence lizard climbing on a rock

A female "bearded-lady" fence lizard with a few greenish-blue scales. Bearded ladies generally are much more common than their female counterparts with little or no blue ornamentation, but they appear to incur greater fitness costs. 

Image: Langkilde lab, Penn State University
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