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A number of social functions have been suggested for the gorget. It may aid in mate attraction or in resource defense. It may signal social status or allow species to identify conspecifics. Among hummingbirds, gorgets are typically found only on males. In the rare instances where they are found on
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Young hummingbirds, which need to intrude on adult territories to feed once they have fledged, all lack gorgets. This may help to make them less visible or less threatening to adult birds.
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Feather wear and exposure to the sun can produce changes in the apparent color of iridescent gorget feathers. For example, fresh gorget feathers on the
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51:, particularly those found in North America; these gorgets are typically
255:. Copenhagen: Zoological Museum, University of Copenhagen. p. 241.
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The Chukar
Partridge: Its Introduction, Life History and Management
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females, they appear to serve primarily for signaling threats.
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are rose red; these fade to a coppery bronzy color with age.
107:. Calton, Staffs, England: T & A D Poyser. p. 254.
182:. Reno, NV: Nevada Department of Fish and Game. p. 33.
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Ridgely, Robert S.; Tudor, Guy; Brown, William L. (1994).
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found on the throat or upper breast of some species of
157:. Austin, TX: University of Texas Press. p. 771.
63:, also show the feature. The term is derived from the
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Hummingbirds of North
America: The Photographic Guide
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The Birds of South
America: The suboscine passerines
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195:A Field Guide to the Hummingbirds of North America
226:. New York: Columbia University Press. p.
103:Campbell, Bruce; Lack, Elizabeth, eds. (1985).
67:used in military armor to protect the throat.
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222:The Natural History Reader in Animal Behavior
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197:. New York: Houghton Mifflin. p. 30.
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47:. It is a feature found on many male
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16:Patch of colored feathers on throat
374:. You can help Knowledge (XXG) by
317:. You can help Knowledge (XXG) by
280:. New York: Springer. p. 55.
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313:This bird-related article is a
218:Topoff, Howard R., ed. (1987).
276:Power, Dennis M., ed. (1989).
1:
278:Current Ornithology, volume 6
178:Christensen, Glen C. (1970).
132:. Academic Press. p. 1.
55:. Other species, such as the
128:Howell, Steve N. G. (2002).
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193:Williamson, Sheri (2001).
57:purple-throated fruitcrow
31:has an iridescent gorget.
431:Vertebrate anatomy stubs
253:Birds of the High Andes
370:–related article is a
39:is a patch of colored
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251:Fjeldså, Jon (1990).
105:A Dictionary of Birds
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29:Costa's hummingbird
368:vertebrate anatomy
72:Anna's hummingbird
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415:Categories
90:References
53:iridescent
23:Like many
78:Functions
41:feathers
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65:gorget
37:gorget
366:This
45:birds
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