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Documents disponibles écrits par cet auteur (5)
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Article
Shane C Sumasgutner, Auteur ; Lauren K Common, Auteur ; Simon Thomsett, Auteur ; Colleen T Downs, Auteur ; Petra Sumasgutner, AuteurAlmost universally, raptors exhibit some degree of sexual size dimorphism, with many species also having substantial sexual dimorphism in plumage patterns. The monophyletic clade ‘booted eagles’ generally do not, except for the Crowned Eagle Ste[...]
Article
Tinyiko C Shivambu, Auteur ; Ndivhuwo Shivambu, Auteur ; Colleen T Downs, AuteurThe Rose-ringed Parakeet Psittacula krameri has established feral populations in South African suburban areas. However, the information on the breeding biology of parakeets remains poorly documented in the country. We assessed parakeets’ breedin[...]
Article
Fiona K Fern, Auteur ; Lindy J Thompson, Auteur ; Colleen T Downs, AuteurMost vulture species worldwide are in decline and of conservation concern. Despite the growing attention to vultures, relatively few studies have focused on their breeding behaviour. Understanding all aspects of a species’ behaviour and its beha[...]
Ouvrage
"Divided into three sections, this book provides detailed information on the 32 global avian invasive species listed by the Invasive Species Specialist Group (ISSG). It also offers an assessment of avian invasions from a biogeographic perspectiv[...]
Article
Tiwonge I Mzumara, Auteur ; Michael R Perrin, Auteur ; Colleen T Downs, AuteurMonitoring abundance of threatened species is important for conservation planning. Lilian’s Lovebird Agapornis lilianae is a near-threatened small parrot found in mopane Colophospermum mopane woodland. Its population has not been investigated in[...]
