Animalia > Chordata > Aves > Procellariiformes > Procellariidae > Pterodroma > Pterodroma phaeopygia

Pterodroma phaeopygia (Galapagos Petrel)

Synonyms: Pterodroma phaeopygia phaeopygia
Language: French; Spanish

Wikipedia Abstract

The Galápagos petrel (Pterodroma phaeopygia) is a large, long-winged gadfly petrel. The species was once known as the dark-rumped petrel, although recent taxonomic changes have eliminated that name from current use. (See also Hawaiian petrel, from which this species was split.) The local people in the Galápagos Islands often call this species the "patapegada".
View Wikipedia Record: Pterodroma phaeopygia

Endangered Species

Status: Critically Endangered
View IUCN Record: Pterodroma phaeopygia

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.41372
EDGE Score: 4.63103


Adult Weight [1]  425 grams
Birth Weight [3]  56 grams
Breeding Habitat [2]  Oceanic islands, Pelagic
Wintering Geography [2]  Pacific Ocean
Wintering Habitat [2]  Pelagic
Diet [4]  Carnivore (Invertebrates), Piscivore
Diet - Fish [4]  50 %
Diet - Invertibrates [4]  50 %
Forages - Water Surface [4]  80 %
Forages - Underwater [4]  20 %
Clutch Size [1]  1
Clutches / Year [1]  1
Incubation [1]  55 days
Migration [5]  Intraoceanic
Wing Span [6]  3.4 feet (1.04 m)


Name Countries Ecozone Biome Species Report Climate Land
Galápagos Islands scrubland mosaic Ecuador Neotropic Deserts and Xeric Shrublands

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Archipelago de Colon Biosphere Reserve 34336011 Galapagos Islands, Ecuador  
Hawaii Volcanoes National Park 177278 Hawaii, United States
Hawaiian Islands Biosphere Reserve 245981 Hawaii, United States  
Kaloko-Honokohau National Historical Park   Hawaii, United States
Puukohola Heiau National Historic Site   Hawaii, United States  

Important Bird Areas

BirdLife Species Factsheet: View Factsheet
Name Location  IBA Criteria   Website   Climate   Land Use 
Isla Floreana Ecuador A1, A2, A4i, A4ii  
Isla San Cristóbal Ecuador A1, A2, A4i, A4ii    
Reserva Nacional de Paracas Peru A1, A2, A3, A4i, A4ii
Santuario de Fauna y Flora Malpelo Colombia A4ii, A4iii    
Tierras altas de Isabela Ecuador A1, A2, A4i, A4ii
Tierras altas de Santa Cruz Ecuador A1, A2, A4i, A4ii  
Tierras altas de Santiago Ecuador A1, A2, A4i, A4ii  

Biodiversity Hotspots

Name Location Endemic Species Website
Tumbes-Choco-Magdalena Colombia, Ecuador, Panama, Peru Yes

Prey / Diet

Amphitretus pelagicus (telescope octopus)[6]
Chiroteuthis veranii (Long-armed Squid)[7]
Haliphron atlanticus[6]
Histioteuthis heteropsis[7]
Kondakovia longimana (Giant Warty Squid)[8]
Mastigoteuthis dentata[6]
Onychoteuthis banksii (common clubhook squid)[7]
Pholidoteuthis massyae[7]
Sthenoteuthis oualaniensis (purpleback squid)[7]
Vitreledonella richardi (Glass Octopus)[6]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Anous minutus (Black Noddy)1
Arctocephalus galapagoensis (Galapagos Fur Seal)1
Coryphaena hippurus (Mahi-mahi)2
Grampus griseus (Risso's Dolphin)2
Kajikia audax (Stripey)1
Lagenodelphis hosei (Fraser's Dolphin)1
Makaira mazara (black spearfish)1
Onychoprion fuscatus (Sooty Tern)1
Phaethon rubricauda (Red-tailed Tropicbird)1
Phoebastria immutabilis (Laysan Albatross)1
Phoebastria irrorata (Waved Albatross)1
Physeter macrocephalus (Sperm Whale)2
Pterodroma neglecta (Kermadec Petrel)2
Pterodroma sandwichensis (Hawaiian Petrel)3
Pterodroma ultima (Murphy's Petrel)2
Puffinus newelli (Newell's Shearwater)1
Stenella attenuata (Pantropical Spotted Dolphin)2
Stenella coeruleoalba (Striped Dolphin)2
Sula sula (Red-footed Booby)1
Thunnus alalunga (longfinned albacore)1
Thunnus albacares (Yellowfin-tuna)1
Xiphias gladius (Swordfish)1
Ziphius cavirostris (Cuvier's Beaked Whale)2

Range Map




Attributes / relations provided by
1de 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
2Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
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
5Myers, 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
6del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
7FEEDING ECOLOGY OF THE DARK-RUMPED PETREL IN THE GALAPAGOS ISLANDS, M. J. Imber, J. B. Cruz, J. S. Grove, R. J. Lavenberg, C. C. Swift, F. Cruz, The Condor 94:437-447 (1992)
8Jorrit 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.
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access