The sex life of treefrogs: How females build better nests by mating with multiple partners

African gray foam-nest treefrogs (Chiromantis xerampelina) are common across the savannas and dry forests of southeastern Africa.

Despite their unremarkable outward appearance, these small animals display some of the most intriguing reproductive behaviors known to science.

Most notably, the females are highly polyandrous, constructing elaborate foam nests and mating with many different male partners in a breeding season. ...