La Tour du Valat

Article

Avian clutch size in relation to rainfall seasonality and stochasticity along an aridity gradient across South Africa

D. Lepage, Auteur ; P. LLoyd, Auteur

Dans Ostrich (75(4) DEC 2004)

The question of how aridity might influence avian clutch size, through the influences of rainfall seasonality and environmental stochasticity (unpredictability), has received little attention. A marked east-west gradient in aridity across South [...]

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Article

Breeding between Tree Swallows from the same brood

D. Shutler, Auteur ; D. J. T. Hussell, Auteur ; A. G. Horn, Auteur ; M. L. Leonard, Auteur ; R. W. Shutler, Auteur ; D. Lepage, Auteur

Dans Journal of Field Ornithology (75(4) FAL 2004)

We provide data on three instances where Tree Swallows (Tacbycineta bicolor) that fledged from the same nest (broodmates) eventually bred together in subsequent years. Two instances were detected in Ontario and a third was detected in Nova Scoti[...]

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Article

Seasonal decline of growth and fledging success in snow geese Anser caerulescens: an effect of date or parental quality?

D. Lepage, Auteur ; A. Desrochers, Auteur ; G. Gauthier, Auteur

Dans Journal of Avian Biology (30(1) MAR 1999)

Late-nesting birds frequently have a lower reproductive success than early-nesting ones. This could be a consequence of seasonal variations in environmental conditions or because Bate-nesting parents an of lower quality than early-nesting ones. [...]

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Article

Why a free data policy is needed for birds and habitats: The good, the bad and the ugly

F. Huettmann, Auteur ; A. T. Peterson, Auteur ; L. Spears, Auteur ; D. Lepage, Auteur

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

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