Golden-crowned Kinglet

Golden-crowned Kinglet
In Canada
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Regulidae
Genus: Regulus
Species: R. satrapa
Binomial name
Regulus satrapa
(Lichtenstein, 1823)

The Golden-crowned Kinglet, Regulus satrapa, is a very small songbird.

Adults are olive-gray on the upperparts with white underparts, with thin bills and short tails. They have white wing bars, a black stripe through the eyes and a yellow crown surrounded by black. The adult male has an orange patch in the middle of the yellow crown.

Their breeding habitat is coniferous forests across Canada, the northeastern and western United States, Mexico and Central America. They nest in a well-concealed hanging cup suspended from a conifer branch.

These birds migrate to the United States. Some birds are permanent residents in coastal regions and in the southern parts of their range. Northern birds remain further north in winter than the Ruby-crowned Kinglet.

They forage actively in trees or shrubs, mainly eating insects, insect eggs and spiders.

They give a series of high-pitched calls on a single note, and tend not to fear human approach.

Contents

Description

Adults are olive-gray on the upperparts with white underparts, with thin bills and short tails. They have white wing bars, a black stripe through the eyes and a yellow crown surrounded by black. The adult male has an orange patch in the middle of the yellow crown. The juvenile is to adult, but with a browner back and without the yellow crown.[1]

Distribution

Golden-crowned Kinglet is a widespread North American bird, breeding in many US states, and over much of Canada, and wintering across much of the continent south to Florida, Texas and Mexico. It also occurs in isolated mountain ranges in southern Mexico and Guatemala, where it is represented by separate subspecies.

Taxonomy

The kinglets are a small group of birds sometimes included in the Old World warblers, but frequently given family status,[2] especially as recent research showed that, despite superficial similarities, the crests are taxonomically remote from the warblers.[3][4] The names of the family, Regulidae, and its only genus, Regulus, are derived from the Latin regulus, a diminutive of rex, "a king",[5] and refer to the characteristic orange or yellow crests of adult kinglets.

There are three migratory subspecies in the United States and Canada, differing in size, bill length, back and rump colours, wing-bar width and colour, and length of supercilium:[6]

The subspecies "amoenus" has been synonymised with apache as the distinction between these populations are obscured by individual variation.[6]

Two other (non-migratory) subspecies occur south of the bird's core range, although these are weakly differentiated from each other and so are perhaps best synonymised:[7]

Hybridization with Ruby-crowned Kinglet has been reported to have possibly occurred.[6]

References

  1. ^ Sibley, David Allen (2000). The Sibley Guide to Birds. New York: Alfred A. Knopf. p. 394. ISBN 0679451226. 
  2. ^ Monroe, Burt L. (February 1992). "The new DNA-DNA avian classification: What's it all about?". British Birds 85 (2): 53–61. 
  3. ^ Barker, F Keith; Barrowclough, George F; Groth, Jeff G (2002). "A phylogenetic hypothesis for passerine birds: taxonomic and biogeographic implications of an analysis of nuclear DNA sequence data". Proceedings of the Royal Society of London B 269 (1488): 295–308. doi:10.1098/rspb.2001.1883. PMC 1690884. PMID 11839199. http://rspb.royalsocietypublishing.org/content/269/1488/295.full.pdf. 
  4. ^ Spicer, Greg S; Dunipace, Leslie (2004). "Molecular phylogeny of songbirds (Passerifor-mes) inferred from mitochondrial 16S ribosomal RNA gene sequences". Molecular Phylogenetics and Evolution 30: 325–335. doi:10.1016/S1055-7903(03)00193-3. PMID 14715224. http://online.sfsu.edu/~gs/spicer/pages/spicerpdf/spicerdunipace04.pdf. 
  5. ^ Brookes, Ian (editor-in-chief) (2006). The Chambers Dictionary, ninth edition. Edinburgh: Chambers. pp. 223, 735, 1277. ISBN 0550101853. 
  6. ^ a b c pp. 374-75 in Pyle, Peter (1997). Identification Guide to North American Birds Part 1. Bolinas, California: Slate Creek Pess. ISBN 0-9618940-2-4. 
  7. ^ Martens, Jochen; Päckert, Martin "Family Regulidae (Kinglets & Firecrests)" pp. 330–349 in Del Hoyo, Josep; Elliott, Andrew; Christie David A (eds) (2006). Handbook of the Birds of the World: Old World Flycatchers to Old World Warblers v. 11. Barcelona: Lynx Edicions. ISBN 84-96553-06-X. 

External links