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Article

Temporal changes in prey composition and biomass delivery to African Crowned Eagle nestlings in urban areas of KwaZulu-Natal, South Africa

Tim van der Meer, Auteur ; Shane McPherson, Auteur ; Colleen Downs, Auteur

Dans Ostrich (89(3) July, 2018)

Globally urban areas are expanding rapidly and this usually has negative effects on biodiversity. Despite this, some species manage to persist in urban areas, as is the case with African Crowned Eagles Stephanoaetus coronatus in KwaZulu-Natal, S[...]

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Article

Birds in a Changing Environment: Report on the 13th Pan-African Ornithological Congress in Arusha, Tanzania

Colleen Downs, Auteur ; Doug Harebottle, Auteur ; Tim Dodman, Auteur ; Abdoulaye Ndiaye, Auteur ; Phoebe Barnard, Auteur ; Brian Huntley, Auteur ; Darcy Ogada, Auteur ; André Botha, Auteur ; Fleur Ng'weno, Auteur

Dans Ostrich (85(1) JAN 2 2014)

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Article

Development and functional significance of dorsal air bags in nestlings of Monteiro's Hornbill Tockus monteiri

Colleen Downs, Auteur ; Christian Boix-Hinzen, Auteur ; Mark Brown, Auteur

Dans Ostrich (80(1) APR 2009)

This study describes the morphology and investigates the possible function of the air bags found on the nestlings of Monteiro's Hornbill Tockus monteiri. These air bags increased in size with age and mass of the nestling until 14 d of age, and t[...]

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