Grebes (Podicipedidae)
Clark's Grebe (Aechmophorus clarkii) - HBW 1, p. 196
French: Grèbe à face blanche
German: Clarktaucher
Spanish: Achichilique de Clark
Taxonomy: Podiceps clarkii Lawrence, 1858, California and New [sic] Mexico.
Recently separated from A. occidentalis, on grounds of wide sympatry with only rare hybridization; probably prevented by differences in advertising calls. Formely considered merely light phase of A. occidentalis. Name clarkii was also applied to smaller southern race, including birds of both colour morphs, now classified as A. o. ephemeralis and A. c. clarkii. Distribution limits of races not well established. Two subspecies recognized.
Subspecies and Distribution:
- clarkii Lawrence, 1858 - Mexican Plateau from N Chihuahua to N Guerrero; Nayarit; (?) L Caballo (New Mexico).
- transitionalis Dickerman, 1986 - W USA, N to Utah and Colorado.
- Least Concern Enlarge map
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A bird springing and spreading its wings. Locality Bear River Migratory Bird Refuge, Box Elder County, Utah, USA (United States) (ssp transitionalis)
Robert Schaefer 13 June 2008 2 years ago 21 sec 4.5 -
A bird swimming and diving, showing the extreme rear position of the feet, good for swimming but impossible for walking. Locality Bear River Migratory Bird Refuge, Box Elder County, Utah, USA (United States) (ssp transitionalis)
Robert Schaefer 13 June 2008 2 years ago 29 sec 4.3 -
An adult swimming and diving, then the same view slowed down 35% for study Locality Ventura, Ventura County, California, USA (United States) (ssp transitionalis)
Don DesJardin 29 February 2008 3 years ago 25 sec 4.1 -
A bird on water, looking around and then diving Locality Cesar E. Chavez Park, Berkeley, California, USA (United States) (ssp transitionalis)
Curt Kessler 28 February 2006 5 years ago 20 sec 2.1
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Clark's Grebe Winter Plumage
Locality Devereux Lagoon, Goleta, Santa Barbara County, California, USA (United States)
Justin Watts 12 November 2011 11 weeks ago 4 -
A bird in the water.
Locality San Francisco, California, USA (United States) (ssp transitionalis)
Dc.Owl 14 August 2008 2 years ago 3.7 -
Clark's grebe swimming in a channel looking for food
Locality Bolsa Chica Wetlands Reserve, Huntington Beach, Orange County, California, USA (United States) (ssp transitionalis)
susanks 29 November 2009 2 years ago 3.5 -
Swimming along a reed bed
Locality Balmorhea Lake, Reeves County, Texas, USA (United States) (ssp transitionalis)
Erik Breden 19 November 2008 1 year ago 3.3 -
Clark's Grebe
Locality Bear River Migratory Bird Refuge, Box Elder County, Utah, USA (United States) (ssp transitionalis)
Icarus_Swenson 19 July 2009 2 years ago 3.3
- No sound recordings available yet
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