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Article
Several bird species breeding in acidified habitats face serious problems caused by lowered availability of calcium-rich foods. Moreover, recent studies have revealed that calcium shortage causes phenotypic variation in certain reproductive para[...]
Article
V. Tilgar, Auteur ; R. Mand, Auteur ; A. Leivits, AuteurRecent 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[...]
Article
P. Kilgas, Auteur ; R. Mand, Auteur ; V. Tilgar, Auteur ; M. Magi, Auteur ; A. Leivits, Auteur
Article
R. Mand, Auteur ; V. Tilgar, Auteur ; A. Lohmus, Auteur ; A. Leivits, Auteur
Article
M. Maegi, Auteur ; R. Maend, Auteur ; A. Konovalov, Auteur ; V. Tilgar, Auteur ; S. J. Reynolds, AuteurThe function of eggshell pigmentation has long been the subject of much speculation. Most of the proposed hypotheses have been based on a signalling function. According to the recently proposed structural-function hypothesis, birds use the pigme[...]
