La Tour du Valat

Article

Changes in distribution and numbers of the breeding population of the Common Crane Grus grus in Estonia

A. Leito, Auteur ; J. Truu, Auteur ; A. Leivits, Auteur ; I. Ojaste, Auteur

Dans Ornis Fennica (80(4) 2003)

The aim of this study is to analyse population trends and distribution of the breeding population of the Common Crane in Estonia. The population size and density of the Common Crane in Estonia has increased several times over the last 30 years ([...]

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Article

Effect of calcium availability and habitat quality on reproduction in Pied Flycatcher Ficedula hypoleuca and Great Tit Paras major

V. Tilgar, Auteur ; R. Mand, Auteur ; A. Leivits, Auteur

Dans Journal of Avian Biology (30(4) DEC 1999)

Recent studies have demonstrated that wild birds breeding in acidified areas may have difficulties in obtaining sufficient calcium for their eggshells, and that a shortage of land snails may be the cause. Here we present experimental evidence th[...]

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Article

Physiological costs of egg production and effects of habitat indicated by state of hernatological health in incubating Great Tits

P. Kilgas, Auteur ; R. Mand, Auteur ; V. Tilgar, Auteur ; M. Magi, Auteur ; A. Leivits, Auteur

Dans Journal of Ornithology (147(5, Suppl. 1) AUG 2006)

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Article

Providing nest boxes for birds: Does habitat matter?

R. Mand, Auteur ; V. Tilgar, Auteur ; A. Lohmus, Auteur ; A. Leivits, Auteur

Dans Journal of Ornithology (147(5, Suppl. 1) AUG 2006)

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