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The Magnificent Frigatebird (Fregata magnificens) was sometimes previously known as Man O'War, reflecting its rakish lines, speed, and aerial piracy of other birds.

It is widespread in the tropical Atlanticmarker, breeding colonially in trees in Floridamarker, the Caribbeanmarker and Cape Verde Islandsmarker. It also breeds along the Pacificmarker coast of the Americas from Mexicomarker to Ecuadormarker including the Galapagos Islandsmarker.

It has occurred as a vagrant as far from its normal range as the Isle of Manmarker, Denmarkmarker, Spainmarker, Englandmarker, and British Columbiamarker.

The Magnificent Frigatebird is 100 cm (39 inches) long with a 215 cm (85 inch) wingspan. Males are all black with a scarlet throat pouch which is inflated like a balloon in the breeding season. Although the feathers are black, the scapular feathers produce a purple iridescence when they reflect sunlight. Females are black, but have a white breast and lower neck sides, a brown band on the wings and a blue eye ring. Immature birds have a white head and underparts.

This species is very similar to the other frigatebirds and is similarly sized to all but the Lesser Frigatebird. However, it lacks a white axillary spur, and juveniles show a distinctive diamond-shaped belly patch.

The Magnificent Frigatebird is silent in flight, but makes various rattling sounds at its nest.

This species feeds mainly on fish, and also attacks other seabirds to force them to disgorge their meals. Frigatebirds never land on water, and always take their food items in flight.

They spend days and nights on the wing, with an average ground speed of 10 km/hour, covering 223±208 km before landing. They alternately climb in thermals, to altitudes occasionally as high as 2500 m, and descend to near the sea surface (Chastel et al. 2003). The only other bird known to spend days and nights on the wing is the Common Swift.


  • Database entry includes justification for why this species is of least concern
  • Harrison, Peter: Seabirds: An Identification Guide by ISBN
  • Hilty: Birds of Venezuela ISBN
  • Stiles and Skutch: A guide to the birds of Costa Rica ISBN


Image:Magnificent Frigatebird (Fregata magnificens) -chick in nest.jpg|Chick on a nestImage:Magnificent Frigatebird (Fregata magnificens) -juvenile.jpg|JuvenileImage:femalefbird.jpg|Female hovering in the windImage:Magnificent Frigatebirds.jpg|Part of a group of 30

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