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Rob G. Bijlsma, Auteur
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Rob G. Bijlsma, Auteur
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Rob G. Bijlsma, Auteur
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Rob G. Bijlsma, Auteur
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Rob G. Bijlsma, Auteur
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Rob G. Bijlsma, Auteur
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Rob G. Bijlsma, Auteur
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Rob G. Bijlsma, Auteur
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Rob G. Bijlsma, Auteur
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Leo Zwarts, Auteur ; Rob G. Bijlsma, Auteur ; Jan Van Der Kamp, AuteurArboreal birds tend to remain in woody vegetation and avoid crossing open areas. Therefore, few tree-dwelling birds are to be expected in scattered trees. We tested this expectation with field data collected in the deserts, savannas and open agr[...]
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Rob G. Bijlsma, Auteur
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Christiaan Both, Auteur ; Rob G. Bijlsma, Auteur ; Janne Ouwehand, AuteurTiming of arrival in long-distance migration could have fitness consequences: arrival too early impairs survival chances, whereas arrival too late reduces current reproductive success. Evolution thus may have favoured a phenotype that arrived at[...]
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Leo Zwarts, Auteur ; Rob G. Bijlsma, AuteurFor a study of long-distance migrants in sub-Saharan Africa, a census method was developed that combined precision and accuracy regarding bird numbers and tree choice. The number of birds present in trees and shrubs can be counted accurately,. a[...]
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Leo Zwarts, Auteur ; Rob G. Bijlsma, Auteur ; Jan Van der Kamp, Auteur ; MARTEN Sikkema, Auteur ; Eddy Wymenga, AuteurIn West Africa, tree preferences of wintering migratory birds (and African residents) were quantified in order to assess the importance of wintering conditions on distribution, abundance and trends of insectivorous woodland birds. This study enc[...]
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Rob G. Bijlsma, Auteur ; Maarten Platteeuw, Auteur ; Mennobart R. van Eerden, AuteurDans Ardea (98(3) 2010)
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Stef van Rijn, Auteur ; Menno Zijlstra, Auteur ; Rob G. Bijlsma, AuteurDans Ardea (98(3) 2010)The coastal wetlands of The Netherlands have always served as winter haunts for juvenile and immature White-tailed Eagles from breeding populations further north and east. Even as these populations were at their lowest ebb by the 1960s and 1970s[...]
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Christiaan Both, Auteur ; Chris A. M. van Turnhout, Auteur ; Rob G. Bijlsma, Auteur ; Henk Siepel, Auteur ; Arco J. van Strien, Auteur ; Ruud P. B. Foppen, AuteurOne consequence of climate change is an increasing mismatch between timing of food requirements and food availability. Such a mismatch is primarily expected in avian long-distance migrants because of their complex annual cycle, and in habitats w[...]
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Rob G. Bijlsma, AuteurDans Limosa (72(3) 1999)During 1971-98 247 nests of Honey Buzzards on the Veluwe and in western Drenthe were climbed and controlled during egg (208 times) and nestling stage (549 times). During these 757 nest visits, pellets were never found. This lack of pellets confl[...]
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Rob G. Bijlsma, AuteurDans Limosa (72(1) 1999)In 1988 and in 1992-98 a total of 48 nestlings of Common Buzzards on 19 nests were weighed and measured (almost) daily from hatching till fledging or death in the province of Drenthe (NE-Netherlands). Each of the 610 nest visits (mostly in the e[...]
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Rob G. Bijlsma, AuteurDans Limosa (71(4) 1998)The breeding biology of Hawfinches in the recently reclaimed polders Noordoostpolder (woodland planted in 1944-55), Oostelijk Flevoland (planted in 1958-68) and Zuidelijk Flevoland (planted in 1987-96) was studied in 1989-97 (Tab. 1). Woodlands [...]
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Rob G. Bijlsma, AuteurDans Limosa (71(3) 1998)During 1995-98, frequent controls of 46 nests of Goshawks (76x during egg stage, 233x during nestling stage) and 100 nests of Common Buzzards (resp. 127x and 508x) were carried out in western Drenthe (NE-Netherlands) to monitor growth and develo[...]
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Rob G. Bijlsma, Auteur ; Minou Vermeulen, Auteur ; Lia Hemerik, Auteur ; Chris Klok, AuteurBijlsma R.G., Vermeulen M., Hemerik L. & Klok C. 2012. Demography of European Honey Buzzards Pernis apivorus. Ardea 100: 163-177. We set out to explore whether changes in fecundity and survival (or both) of European Honey Buzzards were associate[...]
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Ismael Galvan, Auteur ; Rob G. Bijlsma, Auteur ; Juan J. Negro, Auteur ; Manuel Jaren, Auteur ; Juan Garrido-Fernandez, AuteurAlthough it is recognized that certain environmental factors are important determinants of the expression of melanin-based traits, their influence in wild populations of animals is poorly known. One of these factors is the availability of amino [...]
