Bludorsa parulio

Kiel legi la taksonomion

Bludorsa parulio

Bludorsa parulio

Biologia klasado

Regno:	Animaloj Animalia
Filumo:	Ĥorduloj Chordata
Klaso:	Birdoj Aves
Ordo:	Paseroformaj Passeriformes
Familio:	Paruliedoj Parulidae
Genro:	Dendroica
Specio:	'D. caerulescens'

Dunomo

Dendroica caerulescens
(Gmelin, 1789)

Konserva statuso

Konserva statuso: Malplej zorgiga

Aliaj Vikimediaj projektoj

Sistematiko en Vikispecioj

Komunejo pri Bludorsa parulio

v • d • r

La Bludorsa parulio aŭ Nigragorĝa parulio, Dendroica caerulescens, estas birdospecio de la familio de Paruliedoj kaj granda genro Dendroica.

Aspekto

Masklaj plenkreskuloj havas blankajn subajn partojn kun nigraj gorĝo, vizaĝo kaj flankoj; la supraj partoj estas tre malhelbluaj; inter nigraj flankoj kaj bluaj supraj partoj videblas la du blankaj flugilmakuloj. Nematuraj maskloj estas similaj kun supraj partoj pli verdecaj. Inoj havas olivecbrunajn suprajn partojn kaj helflavajn subajn partojn kun pli malhelaj flugiloj kaj vosto, griza krono kaj bruna makulo en vango. Ĉiuj birdoj havas du malgrandajn blankajn flugilmakulojn (en ŝultro kaj meze de flugilplumoj) kiuj ne ĉiam estas videblaj, kaj fajnan pintakran bekon. Kiel multaj parulioj, tiu birdo havas koloran plumaron dum printempo kaj somero, sed ties aŭtuna plumaro estas senkolora kaj malpli distinga. Aŭtune ĝi povas esti ankoraŭ identigita el aliaj similaj parulioj pro siaj malgrandaj blankaj flugilmakuloj.

Kutimaro

Ili reproduktigas en interno de deciduaj kaj miksitaj arbaroj en orienta Nordameriko. Ties nestoj estas malfermaj tasformoj situaj en dikaj arbustoj. La proksimeco de ties nestoj al grundo permesas ke la Bludorsa parulio estas favorata specio por la studo de la kutimoj de parulioj en naturo.

Tiuj nearktisaj birdoj migras al insuloj de Karibio kaj Centrameriko. Ili defendas sian teritorion kontraŭ aliaj birdoj de la sama specio kaj pro la nestumado kaj pro la vintra habitato. La Bludorsa parulio estas tre rara vaganto al Okcidenta Eŭropo.

Tiuj birdoj manĝas aktive en malalta vegetaĵaro, foje ŝvebe foje kaptante insektojn dumfluge. Bludorsaj parulioj ofte manĝas en unu areo kaj tuj moviĝas al la venonta. Tiuj birdoj manĝas ĉefe insektojn, inklude raŭpojn kaj tipuledojn kaj araneojn. Semoj, beroj kaj fruktoj povas esti aldonata al ties dietoj en vintro.

La kanto de tiu birdo estas zuma zii-zii-ziii kun suprena evoluo. La alvoko estas ebena ctuk.

Ĉar tiu birdo postulas grandajn kaj seninterrompitajn arbarajn areojn por nestumado, ties nombroj malpliiĝas.

Referencoj

BirdLife International (2004). Dendroica caerulescens. Internacia Ruĝa Listo de Endanĝeritaj Specioj, eldono de 2006. IUCN 2006. Elŝutita 6a Majo 2006. Malplej Zorgiga.

Eksteraj ligiloj

Bludorsa parulio en la Vikimedia Komunejo (Multrimedaj datumoj)
Kategorio Bludorsa parulio en la Vikimedia Komunejo (Multrimedaj datumoj)
Bludorsa parulio en Vikispecioj (Kolekto pri ĉiuj vivantaj estuloj)

Bludorsa parulio, Informaro - Suddakotaj Birdoj kaj Birdumo
Bludorsa parulio - Dendroica caerulescens - USGS Patuxent Bird Identification InfoCenter
Bludorsa parulio, Speciinformaro – Laboratorio Cornell de Ornitologio
Poŝtmarkoj
Filmetoj de Bludorsa parulio^{[rompita ligilo]} ĉe Internet Bird Collection

Plia legado

Libroj

Holmes, R.T., N. L. Rodenhouse and T. S. Sillett. (2005). Black-throated Blue Warbler (Dendroica caerulescens). In The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Laboratory of Ornithology

Tezoj

Black CP. Ph.D. (1976). THE ECOLOGY AND BIOENERGETICS OF THE NORTHERN BLACK-THROATED BLUE WARBLER (DENDROICA CAERULESCENS CAERULESCENS). Dartmouth College, United States, New Hampshire.

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Chuang HC. Ph.D. (1999). Extra-pair fertilizations and parental care in the black-throated blue warbler (Dendroica caerulescens): Patterns and consequences of behavior. State University of New York at Buffalo, United States, New York.

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Sillett TS. Ph.D. (2001). Long-term demographic trends, population limitation, and the regulation of abundance in a migratory songbird. Dartmouth College, United States, New Hampshire.

Steele BB. Ph.D. (1989). Habitat selection by breeding black-throated blue warblers: Different patterns at two spatial scales and the use of habitat for foraging and nesting. Dartmouth College, United States, New Hampshire.

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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.

Artikoloj

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