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
Perched on a branch. Locality Sulphide Del Rey Campground, Gila County, Arizona, USA (United States)
Ken Simonite 18 April 2012 1 year 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 3 years ago 8 sec 3.9
Bathing in stream Locality Frontera Audubon Society, Weslaco, Hidalgo County, Texas, USA (United States)
steve dillinger 18 December 2008 3 years ago 21 sec 3.7
A male foraging through a tree and singing Locality Yosemite National Park, California, USA (United States) (ssp nigrescens)
Greg Baker 29 May 1998 48 weeks ago 36 sec 2.8
PhotosSee all 8 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 1 year 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 1 year 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 1 year ago 3.7
Locality Madera Canyon, Santa Rita Mountains, Arizona, USA (United States)
Ken Havard 27 March 2009 31 weeks 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 36 weeks ago 3.2
Drinking from the garden ornament
Locality Port-au-Prince, Ouest Department, Haiti
Smoghead 23 April 2011 5 days ago ADDED LAST WEEK 3