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Clutch‐size variation in the Pied Flycatcher Ficedula hypoleuca
Author(s) -
JÄRVINEN ANTERO
Publication year - 1989
Publication title -
ibis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.933
H-Index - 80
eISSN - 1474-919X
pISSN - 0019-1019
DOI - 10.1111/j.1474-919x.1989.tb04792.x
Subject(s) - ficedula , avian clutch size , altitude (triangle) , ecology , latitude , clutch , range (aeronautics) , habitat , biology , longitude , variation (astronomy) , zoology , geography , reproduction , physics , geodesy , geometry , mathematics , astrophysics , materials science , composite material , thermodynamics
Variation in clutch‐size of the Pied Flycatcher Ficedula hypoleuca was studied simultaneously in relation to latitude, longitude, altitude, laying date and habitat, using data from 103 areas from north Africa to north Norway (latitudinal range about 3900 km). Clutch‐size variation was significantly related to altitude and habitat, small clutches being laid at high altitude and in coniferous forests. In contrast to some earlier studies, latitudinal or longitudinal clutch‐size trends were not found.