First description of nesting ecology of the endemic Grey-flanked Cinclodes Cinclodes oustaleti baeckstroemii from the Juan Fernandez Islands, Chile

• Autorzy: Hahn I , Romer U , Schlatter R P

Warianty tytułu

PL

Pierwszy opis miejsc gniazdowych endemicznego podgatunku trzesiogona szarobocznego

• Języki publikacji: EN

Abstrakty

EN

The habitat and nest sites of an island-endemic, the Másafuera Grey-flanked Cinclodes, are described for the first time. The species breeds only in natural cavities in steep rock-walls and rocky slopes or ridges. The nest entrance diameter ranges from 5.5 to 20 cm, the nest chamber being placed within the rock so as to be invisible from the outside. The nest sites found — solely on Alejandro Selkirk Island — were located from a little above the sea-level to the summit region, the preferred habitats being barren canyon bottoms with small streams, and humid alpine plateaus. Nesting extends from early December to late January, indicating a core breeding season from November to January. Fledgling numbers per clutch average about two.

PL

W pracy opisano środowisko życia i miejsca gniazdowe podgatunku backstroemi zamieszkującego wyspę Alejandro Selkirk w archipelagu Juan Fernandez na Oceanie Spokojnym. Ptaki te gnieździły się w ubogich w roślinność dolinach małych potoków oraz wilgotnych płaskowyżach na dużych wysokościach. Sezon lęgowy trwa od listopada do stycznia (lutego). Dla 6 znalezionych gniazd opisano położenie geograficzne, wysokość n.p.m., wysokość nad ziemią, odległość od wierzchołka skały, ekspozycję i nachylenie. Dla 4 gniazd zmierzono także wielkość otworu wejściowego (Tab. 1).

Słowa kluczowe

EN

ornithology; Cinclodes oustaleti baeckstroemii; nest site; Grey-flanked Cinclodes; nesting ecology; Furnariidae; island bird; Juan Fernandez Island; Passeriformes; bird; Chile

• Wydawca: -
• Czasopismo: Acta Ornithologica
• Rocznik: 2005
• Tom: 40
• Numer: 2
• Opis fizyczny: p.165-169,ref.

Twórcy

autor

Hahn I

• Department of Ecology, Catholic University of Chile, P.O.Box 114-D, Santiago, Chile
• Institute of Landscape Ecology, University of Munster, Robert-Koch-Str. 26, D-48149 Munster, Germany

autor

Romer U

• Faculty of Biology, University of Bielefeld, P.O. Box 100131, D-33501 Bielefeld, Germany

autor

Schlatter R P

• Institute of Zoology, Faculty of Sciences, Austral University of Chile, P.O. Box 567, Valdivia, Chile

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