New World Warblers (Parulidae)
Black-throated Blue Warbler (Dendroica caerulescens) - HBW 15, p. 747
French: Paruline bleue
German: Blaurücken-Waldsänger
Spanish: Reinita Azulada
Taxonomy: Motacilla caerulescens J. F. Gmelin, 1789, Santo Domingo, Dominican Republic.
One record of hybridization, probably with D. petechia. Validity of race cairnsi has been questioned, both by earlier ornithologists and by more recent ones, on the basis that, in males at least, differences from nominate are not constant (cairnsi-type males occur in nominate population, and vice versa); further research required. Two subspecies tentatively recognized.
Subspecies and Distribution:
- caerulescens ( J. F. Gmelin, 1789) - breeds in S Canada from Saskatchewan (irregular) and S Ontario E to Nova Scotia and in NE USA from Minnesota E to New England; migrates to Caribbean (mainly Bahamas and Greater Antilles), small numbers to E Middle America.
- cairnsi Coues, 1897 - breeds E USA in Appalachians from SW Pennsylvania S to N Georgia; migrates to Caribbean, some to E Middle America.
- Least Concern Enlarge map
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A male in breeding plumage perched and then feeding Locality El Yarey, Jiguaní, Granma Province, Cuba
Joe Angseesing 26 March 2007 3 years ago 44 sec 4.5 -
A male singing in a tree Locality Garrett State Forest, Garrett County, Maryland, USA (United States) (ssp caerulescens)
Robert Schaefer 23 May 2007 3 years ago 26 sec 4.1 -
Female taking a bath. Locality Rocklands Bird Sanctuary, Anchovy, Cornwall County, Jamaica
Ken Simonite 8 January 2012 3 weeks ago ADDED LAST MONTH 11 sec 4 -
A male singing in a tree Locality Garrett State Forest, Garrett County, Maryland, USA (United States) (ssp caerulescens)
Robert Schaefer 23 May 2007 3 years ago 22 sec 4 -
A female calling in a bush Locality Mount Airy, Maryland, USA (United States) (ssp caerulescens)
Robert Schaefer 28 September 2002 4 years ago 5 sec 3.7 -
A male in breeding plumage eating a caterpillar Locality Carpenters Woods, Philadelphia County, Pennsylvania, USA (United States) (ssp caerulescens)
Alexander Grimwade 8 May 2006 5 years ago 11 sec 3.5
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On a branch
Locality Montmagny, Quebec, Canada
Guy Poisson 6 September 2010 1 year ago 4.2 -
Male perching
Locality Mount Auburn Cemetery, Middlesex County, Massachusetts, USA (United States)
Roger Brissenden 21 May 2011 37 weeks ago 3.8 -
On a trunk
Locality Quebec City, Quebec, Canada
Guy Poisson 23 May 2007 1 year ago 3.7 -
Foraging in the mid-story.
Locality Bluefields Mountains, Cornwall County, Jamaica
Ken Simonite 6 January 2012 2 weeks ago ADDED LAST MONTH 3.7 -
Fall male in hand, banded and released
Locality Georgia, USA (United States)
Conan Guard 1 October 2004 3 years ago 2.5 -
Adult female foraging in foliage seen from above.
Locality Starlight Chalet, Silver Hill Gap, Blue Mountains, Jamaica
Mikko Pyhälä 26 January 2009 3 years ago 2
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Song of a male during migration Locality Cumming, Forsyth County, Georgia, USA (United States)
Stuart Fisher 23 April 2011 41 weeks ago 3.5
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