Black-throated Grey Warbler (Dendroica nigrescens) - HBW 15, p. 751
French: Paruline grise
Spanish: Reinita Gris
Taxonomy: Sylvia nigrescens J. K. Townsend, 1837, no locality = vicinity of Fort William, near Portland, Oregon, USA.
Closely related to the superspecies formed by D. chrysoparia, D. virens, D. townsendi and D. occidentalis; probably split off from this prior to initial Pleistocene glaciations and before the four allospecies within it evolved. Hybridization with D. townsendi and with D. occidentalis reported. Race halseii considered invalid by some authors, although nucleotide-sequence divergence between the two races is similar to that between D. townsendi and D. occidentalis. Two subspecies generally recognized.
Subspecies and Distribution:
- nigrescens ( J. K. Townsend, 1837) - breeds SW Canada (S British Columbia) S on coast and in coastal mountain ranges of W USA to N California; migrates to wintering areas mainly in W Mexico (S Sonora S to Oaxaca).
- halseii ( Giraud, 1841) - breeds in W USA E of the Cascades (from Washington and Wyoming S to California and New Mexico) and extreme NW & N Mexico (N Baja California, extreme NE Sonora); most migrate to W Mexico (including S Baja California).
- Least Concern Enlarge map
VideosSee all 7 videos
An adult male with a caterpillar in it's beak, repeated in slow motion. Locality Colorado National Monument, Mesa County, Colorado, USA (United States) (ssp halseii)
Pieter de Groot Boersma 3 June 2013 51 weeks ago 19 sec 4.2
Perched on a branch. Locality Sulphide Del Rey Campground, Gila County, Arizona, USA (United States)
Ken Simonite 18 April 2012 2 years ago 21 sec 4
Male singing once from exposed perch. Locality Mesa Verde National Park, Montezuma County, Colorado, USA (United States)
Conan Guard 26 May 2009 5 years ago 8 sec 4
Bathing in stream Locality Frontera Audubon Society, Weslaco, Hidalgo County, Texas, USA (United States)
steve dillinger 18 December 2008 4 years ago 21 sec 3.7
A short view of a fledgling in a tree, emitting begging calls. Locality Zion National Park, Utah, USA (United States) (ssp halseii)
Pieter de Groot Boersma 29 May 2013 51 weeks ago 6 sec 3.4
A singing male in a tree, seen from below. Locality Medicine Bow National Forest, Wyoming, USA (United States) (ssp halseii)
Pieter de Groot Boersma 15 June 2013 51 weeks ago 14 sec 3.2
PhotosSee all 9 photos
Adult male, seen from the side, foraging in spring-budded tree.
Locality Madrona Marsh Nature Preserve, Torrance, Los Angeles County, California, USA (United States)
Pia Öberg 5 February 2006 3 years ago 4.6
This warbler species is one of the earlier warbler migrants.
Locality Descanso Gardens, La Cañada Flintridge, Los Angeles County, California, USA (United States)
Alexander Viduetsky 5 April 2014 22 weeks ago 4.5
Black-Throated Gray Warbler foraging
Locality San Antonio Canyon Park, Goleta, Santa Barbara County, California, USA (United States)
Justin Watts 5 November 2011 2 years ago 3.8
Underside view of a perched adult.
Locality Sulphide Del Rey Campground, Gila County, Arizona, USA (United States)
Ken Simonite 18 April 2012 2 years ago 3.7
Locality Madera Canyon, Santa Rita Mountains, Arizona, USA (United States)
Ken Havard 27 March 2009 1 year ago 3.3
Fall female perched in blackberry bush.
Locality Putah Creek Riparian Reserve, University of California, Davis, Yolo County, California, USA (United States) (ssp nigrescens)
kevinguse 4 September 2012 2 years ago 3.2