When romance calls, this bird lifts one bright blue foot, then the other, like it's auditioning for a talent show with very strict colour rules. Not metaphorically. Literally. Meet the blue-footed booby. Widely associated with the Galápagos Islands, these seabirds range across the eastern tropical Pacific.

They are known for their bright blue feet, a trait shaped by both diet and sexual selection. The colour comes from carotenoid pigments obtained through fish such as sardines and anchovies. In both male and female, brighter feet signal better health and a stronger immune system. Males display their feet prominently during courtship, while females with more vivid pigmentation tend to produce healthier offspring. These birds hunt by diving straight into the water at high speed, using sharp eyesight to target schooling fish. Boobies stand as a reminder that evolution isn't a closed chapter—it's an ongoing process.