The blue-footed booby (Sula nebouxii) is one of the most recognizable seabirds of Galápagos. Although the species occurs in different areas of the eastern Pacific, the archipelago is home to one of its most iconic populations. Its most famous feature is more than decorative: the intense blue of its feet is linked to pigments obtained through its diet and can reflect the physical condition of the individual.
During courtship, the male turns that color into the center of attention. He lifts his feet one after the other in an exaggerated high-stepping walk, spreads his wings, points his bill toward the sky, and proudly displays his feet to the female. The blue therefore becomes a visual signal in one of the best-known courtship rituals of Galápagos.
Its feet also serve another surprising purpose. Adults share incubation duties and use their highly vascularized feet to transfer warmth to their eggs. The same feet used to attract a mate later help nurture the next generation.
Among lava, coastline, and open ocean, the blue-footed booby embodies some of the great natural stories of Galápagos: adaptation, sexual selection, and a profound dependence on the productivity of the sea.
