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Article
Stichting WIWO Zeist (NLD) 136p* WIWO Report 32
Article
H. Schekkerman ; J.C.J. Van Wetten | [S.l.] : Foundation working group international wader and waterfowl research = Stichting WIWO Zeist | 1987Foundation working group international wader and waterfowl research = Stichting WIWO Zeist (NLD) 57p* WIWO Report 17
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P.L. Meininger ; C.M. Berrevoets ; H. Schekkerman ; R.C.W. Strucker ; WOLF P.a 1951Sula 5(4) p139-145
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K. Krijgsveld, Auteur ; M. Poot, Auteur ; S. Dirksen, Auteur ; H. Schekkerman, Auteur ; R. Lensink, Auteur
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H. Schekkerman, Auteur ; M. W. J. Van Roomen, Auteur ; L. G. Underhill, AuteurDans Ardea (86(2) 1998)Growth and survival of chicks and movements of broods were studied in Curlew Sandpipers in N.E. Taimyr, Siberia, in 1991. Breeding was synchronised, 73% of 30 clutches hatching during 10-15 July. Nests were distributed clumped in dry frost-heave[...]
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H. Schekkerman, AuteurData from 5,134 Skylarks ringed at Castricum, NW Netherlands, during the autumns of 1977-1992 were analysed to describe migration patterns and sex composition. Birds on active migration were attracted to tape-lures and clap-netted. Weekly estima[...]
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H. Schekkerman, Auteur ; W. Teunissen, Auteur ; E. Oosterveld, Auteur ; H. Kruse, Auteur
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I. Tulp, Auteur ; H. Schekkerman, AuteurBirds with uniparental incubation may face a time allocation problem between incubation and feeding. Eggs need regular warming to hatch successfully, but the parent must leave the nest to feed and safeguard its own survival. Time allocation duri[...]
