Cocos (Keeling) Islands: Booby Birds

The Brown Booby is a large bird, up to around 85 centimetres in length, with a highly distinctive plumage pattern. It has chocolate brown upperparts contrasting against white underparts. Brown Boobies nest on the ground, where they lay pale blue eggs.

The Red-footed Booby, at approximately 70 centimetres in length, is the smallest of boobies. It is a predominantly white species. It is differentiated by its distinctive red feet, together with a pink and blue bill and throat pouch. North Keeling Island is home to one of the world’s most important colonies this species, which is estimated to contain tens of thousands of breeding pairs. The Red-footed Booby differs from most other boobies by nesting in trees.

Also on the island is a small breeding population of the Masked Booby, which has a predominantly white plumage, with black wings, a black tail and a dark facial mask. It is the largest of the boobies, though similar in size to the Brown Booby. The Pulu Keeling population of Masked Boobies lay their eggs from January to July.