Wilson's Phalarope

 

The Wilson’s Phalarope females are a rich peachy and gray, and are more colorful than the males. Females court and defend male mates—several per season—while males do most of the work of raising the young.

Unlike most birds where the female has the predominant role in caring for the young, female phalaropes desert their mates once they’ve laid eggs.

While the male raises the young by himself, the female looks for other males to mate with. This unusual mating system is called polyandry, and it’s reflected in the way the two sexes look, with the females more brightly coloured than the male. Cornell All About Birds