Many species of birds perform elaborate mating dances to impress females. Some species have dedicated places where they gather to perform such dances, so that many females watch as the males compete for their attention. These "arenas" are called leks. You might be surprised to learn that some dinosaurs also did mating dances, and they sometimes gathered in their own, much larger leks.
The world's largest dinosaur lek yet discovered is just west of Denver, Colorado, at a place called Dinosaur Ridge. The plateau is full of fossils, and by state law it is forbidden to walk on them. So when paleontologists identified some claw scratches from 100 million years ago on the sloping side of Dinosaur Ridge, they turned to drone imagery to investigate the rest of the site. By studying the aerial photographs, they found 35 more scratches made by moving dinosaurs. They could even tell what kind of movement produce those scratches, such as a back kick or a turn. Read about the ancient dinosaur dance floor on Dinosaur Ridge at Smithsonian.
(Unrelated image credit: Michael Stokes)