Animalia > Chordata > Aves > Procellariiformes > Procellariidae > Puffinus > Puffinus opisthomelas

Puffinus opisthomelas (Black-vented Shearwater)

Synonyms: Puffinus puffinus opisthomelas
Language: French; Spanish

Wikipedia Abstract

The black-vented shearwater (Puffinus opisthomelas) is a species of seabird. The bird is 30–38 cm in size, with a 76–89 cm wingspan. Formerly considered a subspecies of the Manx shearwater, its actual relationships are unresolved. The black-vented shearwater is thought to feed on mainly small fish. This bird nests in burrows and caves; it is a colonial nester.
View Wikipedia Record: Puffinus opisthomelas

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 6.48451
EDGE Score: 2.70598


Adult Weight [1]  408 grams
Birth Weight [3]  55 grams
Breeding Habitat [2]  Coastal cliffs and islands, Coastal marine
Wintering Geography [2]  Pacific Coast
Wintering Habitat [2]  Coastal marine, Pelagic
Diet [4]  Piscivore
Diet - Fish [4]  100 %
Forages - Water Surface [4]  50 %
Forages - Underwater [4]  50 %
Clutch Size [3]  1
Global Population (2017 est.) [2]  160,000
Incubation [3]  51 days
Wing Span [1]  32 inches (.81 m)


Name Countries Ecozone Biome Species Report Climate Land
Baja California desert Mexico Nearctic Deserts and Xeric Shrublands

Protected Areas

Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States Yes

Prey / Diet

Engraulis mordax (Californian anchoveta)[1]
Sardinops sagax (Australian pilchard)[1]
Scomber japonicus (Striped mackerel)[5]

Prey / Diet Overlap


Corvus corax (Northern Raven)[1]
Falco peregrinus (Peregrine Falcon)[1]
Larus occidentalis (Western Gull)[1]

Range Map


North America;

External References



Attributes / relations provided by
1Keitt, B.S., Tershy, B.R. & Croll, D.A. 2000. Black-vented Shearwater (Puffinus opisthomelas) In: Poole, A. & Gill, F. (Eds). The birds of North America. No. 521. Philadelphia & Washington, DC: Academy of Natural Sciences & the American Ornithologists’ Union.
2Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
3Breeding biology and conservation of the Black-vented Shearwater Puffinus opisthomelas, Bradford S. Keitt, Bernie R. Tershy & Donald A. Croll, Ibis (2003), 145: 673–680
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
5Szoboszlai AI, Thayer JA, Wood SA, Sydeman WJ, Koehn LE (2015) Forage species in predator diets: synthesis of data from the California Current. Ecological Informatics 29(1): 45-56. Szoboszlai AI, Thayer JA, Wood SA, Sydeman WJ, Koehn LE (2015) Data from: Forage species in predator diets: synthesis of data from the California Current. Dryad Digital Repository.
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
Abstract provided by DBpedia licensed under a Creative Commons License