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Documents disponibles écrits par cet auteur (6)
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Article
B. P. Vieira, Auteur ; R. W. Furness, Auteur ; R. G. Nager, AuteurThe Black Skimmer Rynchops niger is a New World's coastal migratory bird with three subspecies based on distinctive morphometrics, plumage, and breeding distribution. Its population is decreasing in North America while numbers are poorly known i[...]
Article
M. Kim, Auteur ; R. G. Nager, Auteur ; R. Furness, Auteur
Article
R. G. Nager, Auteur ; P. Monaghan, Auteur ; D. C. Houston, AuteurMeasurements of costs of reproduction are essential for our understanding of the evolution of reproductive effort. While in birds the effects of increased chick-rearing effort on subsequent survival and fecundity have been relatively well studie[...]
Article
L. Naef-daenzer, Auteur ; R. G. Nager, Auteur ; L. F. Keller, Auteur ; B. Naef-daenzer, AuteurWe analysed egg-hatching rates, the resulting clutch size and fledging weights in relation to prey abundance in Great Tits Parus major in a mixed deciduous forest in Switzerland. We show that the number of oaks within 20 m from the nest affected[...]
Article
H. E. Gorman, Auteur ; K. E. Arnold, Auteur ; R. G. Nager, AuteurThe division of labour in parental care between the two sexes varies between and within species. In birds, parents have been shown to invest more into egg production and nestling care when paired with an attractive rather than an unattractive ma[...]
Article
L. Naef-daenzer, Auteur ; B. Naef-daenzer, Auteur ; R. G. Nager, AuteurWe studied the nestling diet and the foraging performance of Great Tits in relation to prey abundance in the field. Numerous experimental studies present data on foraging decisions in captive Great Tits. Little is, however, known about prey sele[...]
