"Nazca Boobies" Isla Genovesa Things to Do Tip by MalenaN
Isla Genovesa Things to Do: 22 reviews and 93 photos
The Nazca Booby (Sula granti) used to be seen as a subspecies of the Masked Booby, but it is now known that it is a species of its own. In Galapagos Islands the Nazca Boobies are quite common with a population of between 25 000 - 50 000 pairs, spread out in different colonies.
With a length of 81-92cm the Nazca Boobies are the largest of the three species of boobies presented in the Galapagos. They have a white plumage with a black tail, black ends on the primary feathers and a black band at the base of the bill, which looks like a mask over the eyes. The large bill is orange.
Like other boobies the Nazca Boobies feed at sea and catch fish by plunge-diving from high up in the air. They often feed long distances from land.
The Nazca Boobies build their nest on the ground. They lay two eggs, several days apart, but even if both eggs hatch only one chick will survive. When the second egg hatch the older chick will push the newly born out of the nest. There it will be left to die, because the parents will not pay any attention to it. This might seem to be cruel, but by laying two eggs the chance to get a chick to raise will increase, in case the first egg doesn’t hatch or the chick die very young.
Pushing out the second hatchling of the nest is not the only cruel behaviour of the Nazca Boobies. When parents go away to find food chicks left alone can be harassed by boobies without children. I recently read in a science magazine that scientists who had studied ringed boobies in the Galapagos found out that the ones who had become most picked on as young also became the worst bullies when they grew up.
The photos of the Nazca Boobies are all from El Barranco on Isla Genovesa. But on Isla Genovesa there are also Nazca Boobies at Darwin Bay.
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