This is Bird Note. For some birds, having the best nest is a key part of attracting a mate.

Males of many wiver birds species construct a series of intricately woven nests with which

to lure a prospective partner.

If a female is dissatisfied with it, though, she doesn't just move on.

She tears the nest apart, as if to show her disdain.

A male red-winged blackbird can even attract multiple mates if he controls a prime breeding territory,

where nests can be built over the water, making them less accessible to predators like raccoons.

A daily penguins construct their nests on mounds of stones, which help guard against flooding,

and partners often exchange stone gifts during the course of construction.

Unfortunately, stones can be in short supply, which leads to skirmishes within the nesting colony,

as stones are stolen and fiercely guarded.

No stone, one might say, left unturned.

For bird note, I'm Wenfay Tom.