 Another endangered and endemic bird, the Christmas frigatebird, has nesting areas on the northeastern shore terraces.The more widespread great frigatebirds nest in semi-deciduous trees on the shore terrace, with the greatest concentrations being in the North West and South Point areas.The common noddy and two species of bosun or tropicbirds, with their brilliant gold or silver plumage and distinctive streamer tail feathers, also nest on the island.