Animalia > Chordata > Aves > Anseriformes > Anatidae > Lophodytes > Lophodytes cucullatus

Lophodytes cucullatus (Hooded Merganser)

Synonyms: Mergus cucullatus
Language: French; Spanish

Wikipedia Abstract

The hooded merganser (Lophodytes cucullatus) is a species of small duck. It is the only extant species in the genus Lophodytes. The bird is striking in appearance; both sexes have crests that they can raise or lower, and the breeding plumage of the male is handsomely patterned and coloured. The hooded merganser has a sawbill but is not classified as a typical merganser. Hooded mergansers are the second smallest species of merganser, with only the smew of Europe and Asia being smaller, and it also is the only merganser whose native habitat is restricted to North America.
View Wikipedia Record: Lophodytes cucullatus

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.71521
EDGE Score: 1.90437


Clutch Size [6]  11
Clutches / Year [4]  1
Global Population (2017 est.) [3]  730,000
Incubation [4]  31 days
Maximum Longevity [4]  12 years
Water Biome [1]  Lakes and Ponds, Rivers and Streams
Wing Span [7]  25 inches (.63 m)
Adult Weight [2]  1.36 lbs (617 g)
Birth Weight [4]  31 grams
Female Weight [2]  1.499 lbs (680 g)
Male Weight [2]  1.221 lbs (554 g)
Weight Dimorphism [2]  22.7 %
Breeding Habitat [3]  Boreal forests, Temperate eastern forests
Wintering Geography [3]  Widespread U.S.
Wintering Habitat [3]  Freshwater lakes and rivers
Diet [5]  Carnivore (Invertebrates), Carnivore (Vertebrates), Piscivore, Granivore, Herbivore
Diet - Ectothermic [5]  10 %
Diet - Fish [5]  30 %
Diet - Invertibrates [5]  40 %
Diet - Plants [5]  10 %
Diet - Seeds [5]  10 %
Forages - Water Surface [5]  20 %
Forages - Underwater [5]  80 %
Female Maturity [4]  2 years
Male Maturity [4]  2 years


Protected Areas

+ Click for partial list (100)Full list (164)

Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No

Prey / Diet


Haliaeetus leucocephalus (Bald Eagle)[8]


Parasitized by 
Aix sponsa (Wood Duck)[8]
Capillaria anatis <Unverified Name>[9]
Schistocephalus solidus[9]
Streptocara crassicauda <Unverified Name>[9]
Streptocara formosensis <Unverified Name>[9]

Institutions (Zoos, etc.)

Range Map


North America; Western Michigan University’s Asylum Lake;

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
2Dugger, BD, KM Dugger, and LH Fredrickson. 1994. Hooded Merganser (Lophodytes cucullatus). In The Birds of North America, no. 98 (A. Poole and F. Gill, Eds.). Academy of Natural Sciences, Philadelphia, and American Ornithologists' Union, Washington, DC
3Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
4de 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
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
6Jetz W, Sekercioglu CH, Böhning-Gaese K (2008) The Worldwide Variation in Avian Clutch Size across Species and Space PLoS Biol 6(12): e303. doi:10.1371/journal.pbio.0060303
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.
9Gibson, 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
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License