Animalia > Chordata > Aves > Suliformes > Fregatidae > Fregata > Fregata andrewsi

Fregata andrewsi (Christmas Frigatebird; Andrew's Frigatebird)

Wikipedia Abstract

The Christmas frigatebird or Christmas Island frigatebird (Fregata andrewsi) is a seabird of the frigatebird family Fregatidae which is endemic to Christmas Island in the Indian Ocean. The Christmas frigatebird is a large lightly built seabird with brownish-black plumage, long narrow wings and a deeply forked tail. It has a wingspan of around 2.15 m (7.1 ft). The male has an egg shaped white patch on its belly and a striking red gular sac which it 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 (mostly flying fish), and sometimes indulge in kleptoparasitism, harassing other birds to force them to regurgitate their food. The species is listed as critically endangered by the I
View Wikipedia Record: Fregata andrewsi

Endangered Species

Status: Critically Endangered
View IUCN Record: Fregata andrewsi

EDGE Analysis

The Christmas Island Frigatebird is the rarest endemic seabird on Christmas Island, Australia. It belongs to a family of five birds, the Fregatidae, which have the largest wingspan to body weight ratio of any bird. This bird has the ability to stay aloft for more than a week at a time allowing them to have a large foraging range. It spends a large proportion of time at sea, snatching prey from other birds and plucking squid and fish from the surface of the water. Its breeding habitat is affected by the invasive yellow crazy ant, while threats from habitat loss and pollution from phosphate mining still ongoing.
Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 22.6782
EDGE Score: 5.93714
View EDGE Record: Fregata andrewsi


Clutch Size [3]  1
Incubation [5]  52 days
Maximum Longevity [6]  25 years 7 months
Water Biome [1]  Pelagic, Coastal
Wing Span [5]  7.118 feet (2.17 m)
Adult Weight [2]  3.252 lbs (1.475 kg)
Birth Weight [3]  80 grams
Female Weight [2]  3.417 lbs (1.55 kg)
Male Weight [2]  3.086 lbs (1.40 kg)
Weight Dimorphism [2]  10.7 %
Diet [4]  Carnivore (Invertebrates), Carnivore (Vertebrates), Piscivore
Diet - Endothermic [4]  10 %
Diet - Fish [4]  40 %
Diet - Invertibrates [4]  40 %
Diet - Scavenger [4]  10 %
Forages - Water Surface [4]  80 %
Forages - Underwater [4]  20 %

Protected Areas

Important Bird Areas

Alliance for Zero Extinction (AZE) Sites

Name  Location   Map   Climate   Land Use 
Christmas Island National Park Australia  

Biodiversity Hotspots

Name Location Endemic Species Website
Sundaland Brunei Darussalam, Indonesia, Malaysia, Singapore, Thailand Yes

Prey / Diet

Kondakovia longimana (Giant Warty Squid)[7]

Range Map


External References



Attributes / relations provided by
1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
2Marchant, S.; Higgins, PJ (eds.) 1990. The handbook of Australian, New Zealand and Antarctic birds, Vol. 1., ratites to ducks. Oxford University Press, Melbourne
3Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
4Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
5del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
6de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
7Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
AZE sites provided by Alliance for Zero Extinction (2010). 2010 AZE Update.
Abstract provided by DBpedia licensed under a Creative Commons License