Herald Petrel

The bird is 35–39 cm (14–15 in) in size, with an 88–102 cm (35–40 in) wingspan. It was formerly considered conspecific with the Trindade petrel and Henderson petrel. This petrel has various colour morphs: dark and light, as well as intermediates between the two.

The Herald petrel nests on oceanic islands and atolls, on cliff ledges, ridges or rocky slopes. On some islands, nesting birds are threatened by feral cats and rats. Found primarily in the south Pacific, it has been seen in Hawaii. In May 2007, a Herald petrel tagged on Raine Island in 1984 was observed off the coast of Mauritius in the Indian Ocean. This greatly increases the known life span and range of the species. In 2009 it was identified as this species, from what was previously an unidentified Pterodroma species, to be breeding on Round Island, 22 km (14 mi) north of Mauritius, in the Indian Ocean. In August 2017, Queensland Parks and Wildlife Services (QPWS) staff confirmed a Herald petrel chick had hatched on Raine Island after sighting an adult Herald petrel taking care of a single egg in a nest in June 2017. The sighted chick was the first time a Herald petrel was seen to breed in 30 years. Raine Island is the only known Herald petrel breeding site in Australia.