What makes the red-footed booby different from the other two boobies?
Two things set it apart. It’s the smallest of the three Galápagos boobies, and it’s the only one that nests in trees rather than on the ground. Blue-footed and Nazca boobies both nest on bare ground. The red-foot builds a flimsy stick nest up in the mangroves and low trees, which changes where, and how, you watch it.
That tree-nesting habit is the practical tell. If you’re looking up into the branches at a colony, you’re almost looking at red-foots.
How do you tell it apart from blue-footed and Nazca boobies?
Three working clues. The feet: red, obviously, not blue and not the greyish tone of a Nazca. The size: it’s the smallest of the trio, noticeably slighter than the bulky Nazca. And the setting: red-foots perch and nest in trees, while blue-footed and Nazca boobies are ground-nesters. There are colour morphs too, the plumage varies from brown to a paler form, but I’d lean on feet, size and where the bird is sitting first.
