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Eggshell-pigmentation, soil calcium and the local abundance, distribution and diversity of woodland snails (Mollusca)

Matthew R. Jubb, Auteur ; Teddy A. Wilkin, Auteur ; Andrew G. Gosler, Auteur

Dans Ardea (94(1) Spring, 2006)

Recent studies of Great Tit Parus major eggs in Wytham Woods, UK, indicate that the eggshell's pigmentation is related to the eggshell's thickness and so also to calcium availability (indicated by soil analysis) near to the nest. Previous work e[...]

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