Animalia > Chordata > Aves > Charadriiformes > Alcidae > Aethia > Aethia cristatella

Aethia cristatella (Crested Auklet)

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Wikipedia Abstract

The crested auklet (Aethia cristatella) is a small seabird of the family Alcidae, distributed throughout the northern Pacific and the Bering Sea. The species feeds by diving in deep waters, eating krill and a variety of small marine animals. It nests in dense colonies of up to 1 million individuals in the Bering Sea and the Sea of Okhotsk. It often breeds in mixed-species colonies with the least auklet, a smaller congener.
View Wikipedia Record: Aethia cristatella

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 7.03047
EDGE Score: 2.08324


Clutch Size [6]  1
Clutches / Year [6]  1
Global Population (2017 est.) [3]  5,500,000
Incubation [6]  34 days
Maximum Longevity [6]  11 years
Migration [1]  Intercontinental
Water Biome [1]  Pelagic, Coastal
Wing Span [7]  18 inches (.45 m)
Adult Weight [2]  259 grams
Birth Weight [4]  54.2 grams
Breeding Habitat [3]  Coastal cliffs and islands, Coastal marine
Wintering Geography [3]  Pacific Coast
Wintering Habitat [3]  Coastal marine
Diet [5]  Carnivore (Invertebrates), Piscivore
Diet - Fish [5]  20 %
Diet - Invertibrates [5]  80 %
Forages - Underwater [5]  100 %
Female Maturity [6]  3 years
Male Maturity [6]  3 years


Name Countries Ecozone Biome Species Report Climate Land
Chukchi Peninsula tundra Russia Palearctic Tundra
Kamchatka-Kurile meadows and sparse forests Russia Palearctic Boreal Forests/Taiga
Sakhalin Island taiga Russia Palearctic Boreal Forests/Taiga
South Sakhalin-Kurile mixed forests Russia Palearctic Temperate Broadleaf and Mixed Forests    

Protected Areas

Important Bird Areas

Prey / Diet


Falco peregrinus (Peregrine Falcon)[8]
Haliaeetus leucocephalus (Bald Eagle)[8]
Haliaeetus pelagicus (Steller's Sea-Eagle)[9]
Homo sapiens (man)[8]
Larus glaucescens (Glaucous-winged Gull)[8]


Parasitized by 
Ceratophyllus vagabundus vagabundus[10]
Corynosoma villosum[11]

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Aquarium of the Pacific, Long Beach
Cincinnati Zoo & Botanical Garden

Range Map


North America;

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
2Jones, IA 1993. Crested Auklet (Aethia cristatella). In A. Poole and F. Gill [eds.], The birds of North America, No. 70. The Academy of Natural Sciences, Philadelphia, PA, and The American Ornithologists' Union, Washington, DC
3Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
4Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
5Hamish 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
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
7del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
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.
9Diet of the Steller’s Sea Eagle in the Northern Sea of Okhotsk, Irina UTEKHINA, Eugene POTAPOV & Michael J. MCGRADY, First Symposium on Steller’s and White-tailed Sea Eagles in East Asia pp. 71-82, 2000
10International Flea Database
11Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Abstract provided by DBpedia licensed under a Creative Commons License