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Titolo:
Perch selection by singing chaffinches: a better view of surroundings and the risk of predation
Autore:
Krams, I;
Indirizzi:
Daugavpils Pedag Univ, Dept Sci, LV-5400 Daugavpils, Latvia Daugavpils Pedag Univ Daugavpils Latvia LV-5400 -5400 Daugavpils, Latvia
Titolo Testata:
BEHAVIORAL ECOLOGY
fascicolo: 3, volume: 12, anno: 2001,
pagine: 295 - 300
SICI:
1045-2249(200105/06)12:3<295:PSBSCA>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
FORAGING SITES; TIT FLOCKS; ANTIPREDATORY VIGILANCE; ACCIPITER-NISUS; PREY SELECTION; WILLOW; BIRDS; SPARROWHAWKS; PASSERINES; BEHAVIOR;
Keywords:
Fringilla coelebs; perch selection; predation risk; singing chaffinches; territorial advertisement;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Krams, I Daugavpils Pedag Univ, Dept Sci, Vienibas Iela 13, LV-5400 Daugavpils, Latvia Daugavpils Pedag Univ Vienibas Iela 13 Daugavpils Latvia LV-5400
Citazione:
I. Krams, "Perch selection by singing chaffinches: a better view of surroundings and the risk of predation", BEH ECOLOGY, 12(3), 2001, pp. 295-300

Abstract

Predation risk varies among perches, and the vulnerability of singing chaffinches (Fringilla coelebs) might differ depending on where they perch in atree. To find out how singing of the chaffinch is associated with antipredatory behavior, I studied perch selection in mature pine forest and in pinesaplings, two habitats differing in the amount of cover for protection from predators. My results show that male chaffinches prefer to sing below thecanopy of mature pines and in the uppermost parts of sapling pines. Although these are the canopy parts most exposed to sparrowhawk (Accipiter nisus)attacks, staying in open sites may be a beneficial strategy for singing chaffinches because it makes it possible to improve antipredatory vigilance. This assumption was supported by the hawk experiments. After being exposed to the sparrowhawk model, all of the singing birds selected the conspicuousperch below the canopy of mature pines. The males that perched higher in the canopy before the experiment moved to the lower canopy, whereas those males that sang below the canopy did not change their singing perch.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 15:39:54