Flavvanga parulio

La Flavvanga parulio, Dendroica virens, estas paserina birdo de la familio de Paruliedoj de Ameriko kaj granda genro de Dendroica.

Ĝi estas specio tre simila al la proksima parenco la Orvanga parulio sed ne havas la tiom flavan vizaĝon tiom ĉirkaŭita je nigro. Ĝi estas 12 cm longa kaj pezas 9 g, kaj havas anstataŭ nigran olivverdecajn kronon, nukon kaj dorson, flavan vizaĝon kun olivverdecaj markoj kiel nuanco el traokula strio suben al la vango, fajnan pintakran bekon, du blankajn flugilstriojn kaj helgrizecajn subajn partojn kun nigra strieco en flankoj. Masklaj plenkreskuloj havas nigrajn gorĝon kaj supran bruston; inoj havas palan gorĝon kaj nur nigrajn markojn bruste. Pugo kaj subpugo estas flavaj.

eta|maldekstra|Parulio kun idoj

La reprodukta biotopo de la Flavvanga parulio estas arbaroj ĉu de koniferoj ĉu miksitaj en orienta Nordameriko kaj okcidenta Kanado kaj marĉoj de marĉaj taksodioj en la suda marbordo de Atlantiko. La nestoj de tiuj birdoj estas malfermaj tasoj, kiuj kutime situas ĉe trunko de arbo.

Tiuj birdoj migras al Meksiko, Centrameriko, Karibio kaj suda Florido; kelkaj birdoj vagadas tiom for kiom ĝis Sudameriko, kun la plej suda paro vidata venanta el Ekvadoro.

Flavvangaj parulioj manĝas aktive inter vegetaĵaro, kaj ili foje plukas aŭ kaptas insektojn per flugetoj. Insektoj estas la precipa komponanto de la dieto de tiuj birdoj, kvankam foje ili manĝas ankaŭ berojn.

La kanto de tiu birdo estas zumanta zii-zii-zii-zuu-ziit aŭ zuu-zii-zuu-zuu-ziit. La alvoko estas akra cip.

Tiu nearktisa birdo suferas parazitadon fare de la Brunkapa molotro.

 Referencoj

Literaturo
  Malplej Zorgiga
 Curson, Quinn kaj Beadle,New World Warblers ISBN 0-7136-3932-6
 Stiles kaj Skutch, A guide to the birds of Costa Rica’’ ISBN 0-8014-9600-4
 Libroj 
 Morse, D. H. and A. F. Poole (2005). Black-throated Green Warbler (Dendroica virens). The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Laboratory of Ornithology; Retrieved from The Birds of North American Online database.

 Informoj 
 Cooper JM, Enns KA & Shepard MG. (1997). Status of the black-throated green warbler in British Columbia. Canadian Research Index. p. n/a.
 Norton MR. (1999). Status of the black-throated green warbler, Dendroica virens, in Alberta. Canadian Research Index. p. n/a.

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 Whelan CJ. Ph.D. (1987). Effects of foliage structure on the foraging behavior of insectivorous forest birds. Dartmouth College, United States, New Hampshire.

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 Eksteraj ligiloj 
 Flavvanga parulio - Dendroica virens  - USGS Patuxent Bird Identification InfoCenter
 Flavvanga parulio, Speciinformaro - Laboratorio Cornell de Ornitologio
 Flavvanga parulio, Informaro - Suddakotaj Birdoj kaj Birdumo
 Filmetoj de Flavvanga parulio ĉe Internet Bird Collection

Kategorio:Paseroformaj
Kategorio:Paruliedoj
Kategorio:Nearktisa faŭno
Kategorio:Birdoj de Ameriko