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Contrasting temporal changes in lay-date distributions in co-occurring populations of Blue Tits Cyanistes caeruleus and Great Tits Parus major

Anne E. Goodenough, Auteur ; Adam G. Hart, Auteur ; Richard Stafford, Auteur ; Simon L. Elliot, Auteur

Dans Bird Study (58(2) 2011)

Capsule Between 1990 and 2004 changes in first-egg date (FED) differed in co-occurring populations of Blue Tits and Great Tits. In Blue Tits mean FED advanced by five days but the within-year variability in FEDs did not change, while in Great Ti[...]

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