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Documents disponibles écrits par cet auteur (11)
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Ron Summers, Auteur ; Bob Swann, Auteur
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Gunnar T. Hallgrimsson, Auteur ; Ron Summers, Auteur ; Bozena Kalejta-Summers, Auteur
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Counts at 16 Capercaillie leks revealed that singing started two hours before sunrise and reached a peak in the number that sang about one hour before sunrise. Most song had finished by sunrise, but some extended up to five hours after sunrise. [...]
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Ron Summers, Auteur ; Nick Christian, Auteur ; Brian Etheridge, Auteur ; Stuart Rae, Auteur ; Ian Cleasby, Auteur ; Snæbjörn Palsson, AuteurCapsule: Scottish-breeding Greenshanks Tringa nebularia migrate largely to Ireland.Aims: To describe the migration timings and determine the non-breeding areas (staging and wintering areas) of Scottish-breeding Greenshanks.Methods: Breeding adul[...]
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Ron Summers, Auteur ; Brian Bates, Auteur ; Louise de Raad, Auteur ; Norman Elkins, Auteur ; Brian Etheridge, AuteurThe migrations of Common Sandpipers Actitis hypoleucos are described by combining ringing data with findings from a geolocator study in Highland Scotland. The first part of the autumn migration involved feeding in areas away from the breeding gr[...]
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Eilidh McNab, Auteur ; Ron Summers, Auteur ; Gavin Harrison, Auteur ; Kirsty J. Park, AuteurCapsulePines physically defend their seeds against seed-eating birds and mammals more than spruces or larches. Cone characteristics reflect the rate at which Common Crossbills Loxia curvirostra curvirostra extract seeds from different non-native[...]
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Adam Watson, Auteur ; Mick Marquiss, Auteur ; Ron Summers, AuteurWe present a more complete and definitive analysis than hitherto of the long runs of data on crossbill abundance and cone-crops in Finland and in Scotland. The abundance of Common Crossbills Loxia curvirostra in Finland was correlated with the a[...]
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Ron Summers, Auteur
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Pim Edelaar, Auteur ; Ron Summers, Auteur ; Natalia P. Iovchenko, Auteur
