During spring at Lostwood National Wildlife Refuge in North Dakota, male Sharp-tailed Grouse  - like the one pictured here - perform their elaborate mating dances on a matted patch of ground called a lek. They stomp their feet, extend their wings, and zip around the lek. Then, in an instant, they stop – stock-still. All this to impress the female grouse observing from the sidelines! This wondrous, strange display is rare. Throughout the world, very few species of birds, perhaps fewer than 100, use leks when breeding.   Learn more at BirdNote.org.