Although these birds are not endemic to the area, the Galápagos Islands are home to over half of all breeding pairs. These boobies nest on land at night and take off at dawn in search of food. Their diet consists mainly of anchovies and it is the pigmentation of the fish that gives the birds their blue feet.
It is thought that the booby birds got their name from the Spanish word ‘bobo’, meaning stupid, which is how early European colonists may have characterised these birds when seeing them walking clumsily on land, their least graceful environment. It is also thought that the early Europeans may have characterised these birds as ‘stupid’ due to the fact that they were unafraid of humans, as they have never encountered a human meaning to do them harm.
Blue footed boobies usually raise two chicks but sometimes have three in one breeding cycle, however the eggs are laid five days apart, allowing the parents to provide more attentive care for the chicks during the first days of life. Both the males and the females take turns in incubating the eggs and feeding the chicks. If food supplies are good then all three chicks can survive, however if food supplies are low the parents will feed the larger and stronger chick first, which often leads to the death of the younger and weaker sibling.