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Article

Does breeding performance of Red-backed Shrike Lanius collurio depend on nest site selection?

P. Tryjanowski, Auteur ; S. Kuzniak, Auteur ; B. Diehl, Auteur

Dans Ornis Fennica (77(3) 2000)

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Article

Effect of research activity on the success of Red-backed Shrike Lanius collurio nests

P. Tryjanowski, Auteur ; S. Kuzniak, Auteur

Dans Ornis Fennica (76(1) 1999)

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Article

Population size and productivity of the White Stork Ciconia ciconia in relation to Common Vole Microtus arvalis density

P. Tryjanowski, Auteur ; S. Kuzniak, Auteur

Dans Ardea (90(2) FAL 2002)

We studied population size and productivity of White Storks Ciconia ciconia in 1983-2000 in 417 km(2) of the Obra river valley in western Poland and its response to Common Vole Microtus arvalis density. The 33 to 60 nesting pairs fluctuated in c[...]

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Article

Should avian egg size increase as a result of global warming? A case study using the red-backed shrike (Lanius collurio)

P. Tryjanowski, Auteur ; T. H. Sparks, Auteur ; L. Kuczynski, Auteur ; S. Kuzniak, Auteur

Dans Journal of Ornithology (145(3) JUL 2004)

From some life-history traits, avian egg size can be postulated as potentially affected by climate change. In this paper, we present and discuss the potential effect of mean temperature in the breeding season on egg size of the red-backed shrike[...]

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Article

What affects the magnitude of change in first arrival dates of migrant birds?

P. Tryjanowski, Auteur ; S. Kuzniak, Auteur ; T. H. Sparks, Auteur

Dans Journal of Ornithology (146(3) JUL 2005)

We analysed which among four factors (mean first arrival date, migration distance, changes in population size, detectability of species) influenced the magnitude of change (regression coefficient) in the first arrival dates of 30 migrant bird sp[...]

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