What is the common name of the bird in the picture?

The magnificent frigatebird is a seabird of the frigatebird family 'Fregatidae'. With a length of 89–114 centimetres (2 ft 11 in – 3 ft 9 in) and wingspan of 2.17–2.44 m (7 ft 1 in – 8 ft 0 in) it is the largest species of frigatebird. It occurs over tropical and subtropical waters off America, between northern Mexico and Perú on the Pacific coast and between Florida and southern Brazil along the Atlantic coast. There are also populations on the Galápagos Islands in the Pacific and the Cape Verde islands in the Atlantic.

It is a large, lightly built seabird with brownish-black plumage, long narrow wings and a deeply forked tail. The male has a striking red gular sac which he inflates to attract a mate. The female is slightly larger than the male and has a white breast and belly. They feed on fish taken in flight from the ocean's surface, and sometimes indulge in kleptoparasitism, harassing the other birds to force them to regurgitate their food.

It was originally considered to belong to the species 'Fregata aquila' but in 1914 the Australian ornithologist Gregory Mathews proposed that the it should be considered as a separate species with the binomial name 'Fregata magnificens'. Of the four other species within the genus Fregata, genetic analysis has shown that the magnificent frigatebird is most closely related to the Ascension frigatebird.