India, Feb. 4 -- In a video that has caught the imagination of millions on social media, a groom and his entourage are showing off their dancing chops, while the bride watches appreciatively. Among the thousands of adulatory comments they received, one goes, "So this is what birds feel like!"

While many birds, like flamingoes and peacocks, rely on spectacular dances to find a mate, others deploy different tactics. The black grouse, for instance, gathers with other males in an open ground known as a lek. There, they strut, fan their feathers, and produce a distinctive bubbling and cooing sound. Each male defends his territory within the lek, engaging in elaborate displays and occasional fights. The females watch from a distance, typically...