Singing is not energetically demanding for pied flycatchers, Ficedula hypoleuca
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چکیده
منابع مشابه
Female Hematozoan Infection Reduces Hatching Success but not Fledging Success in Pied Flycatchers Ficedula hypoleuca
—We report association between female blood parasite prevalence (percentage of infected birds) just after egg laying and reproductive success in two successive breeding seasons, in a breeding population of Pied Flycatcher Ficedula hypoleuca in central Spain. Females infected with Trypanosoma spp. had a higher probability of deserting their clutches during the incubation period than noninfected ...
متن کاملSnail consumption and breeding performance of pied flycatchers (Ficedula hypoleuca) along a pollution gradient in the Middle Urals, Russia.
During the years 1989-91, 1997-2003, and 2005-07, we studied how emissions from the Middle Urals copper smelter affect snail availability and reproduction of free-living pied flycatchers (Ficedula hypoleuca). We counted snail shells dropped in nests and analysed food samples of nestlings. Pied flycatchers brought to nestlings fewer shells in heavily polluted sites compared to background sites, ...
متن کاملNestling testosterone is associated with begging behaviour and fledging success in the pied flycatcher, Ficedula hypoleuca.
Animal signals are hypothesized to be costly in order to honestly reflect individual quality. Offspring solicitation signals given by nestling birds are thought to have evolved to advertise either need or individual quality. We tested the potential role of testosterone (T) in controlling the intensity of these signals by measuring begging behaviour as: (i) duration of the begging display and (i...
متن کاملResponses to Reduced Industrial Metal Emissions: An Ecotoxicological Study on Pied Flycatcher (Ficedula hypoleuca, Aves)
Metals have been used by humans for thousands of years, and this has resulted in increased concentrations in the biosphere. The environment around pointsources, such as mines and smelters, are of particular concern, as metals may accumulate to high concentrations, and potentially reach levels toxic to the local flora and fauna. This thesis focuses on the effects on pied flycatcher populations o...
متن کاملHigh Prevalence of Hematozoa in Nestlings of a Passerine Species, the Pied Flycatcher (Ficedula Hypoleuca)
While this may be true in many passerines, mainly ground-nesting species with short fledgling periods, we show here that prevalences may be detected as early as 13 days of age in a cavity-nesting passerine. Prevalences and intensities of hematozoa in nestling birds may merit further study, as both parameters are relatively easy to quantify in smears of peripheral blood in bird species such as t...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2004
ISSN: 1465-7279
DOI: 10.1093/beheco/arh038