You probably already know that turkeys engage in courtship behavior. They blush and fan their tails and strut around while emitting a low drumming noise.
It’s attractive if you’re a female turkey. Sometimes, though, male turkey siblings pair up and pool their courtship resources. Learn more on this Moment of Science.
The answer is diet. Those species with the most elaborate plumage also have the most diverse and reliable diet: a variety of insects, and fruits rich in complex nutrients. With this reliable food supply, females can raise the hatchlings without help from the males.