Flutterby™! : Boobies!

Interesting little article on sex, reproduction and blue... feet: NY Times: On Galápagos, Revealing the Blue-Footed Booby’s True Colors:

Males avoid mating with females whose feet has been dulled with paint, the researchers also discovered. And when a male’s feet are artificially dulled after his mate has laid one egg, the female responds to the apparent decline in his condition through a downsizing of her own, making her second egg smaller than the first.