A female may choose a male from several ... But bigger is only better up to a point. If peacock trains become too big or too colorful over time, they may no longer confer a selective advantage.

making his colorful back end stand up big and bright. They are called peacock spiders because this technique is similar to ...

We studied the jumping abilities of miniature male and female Australian peacock spiders ... waving their third pair of legs and opening the colorful flap-like extensions on the abdomen.