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Article
Sascha Dueker, Auteur ; Sandi Willows-Munro, Auteur ; Michael R. Perrin, Auteur ; Yilma D. Abebe, Auteur ; Nathaniel N. D. Annorbah, Auteur ; Esther W. Mwangi, Auteur ; Ireene R. Madindou, Auteur ; Wondimagegnehu Tekalign, Auteur ; Emiliano Mori, Auteur ; Tiwonge, I Mzumara, Auteur ; Chris Brown, Auteur ; Ursula Bryson, Auteur ; Henry Ndithia, Auteur ; Tim Dodman, Auteur ; Henriette van der Zwan, Auteur ; Rencia van der Sluis, Auteur ; Chaona R. Phiri, Auteur ; Abigail Karimanzira, Auteur ; Rowan O. Martin, AuteurLovebirds (genus Agapornis of family Psittaculidae) are a group of small, colourful parrot species endemic to sub-Saharan Africa and Madagascar, two-thirds of which are considered to have declining populations. Effective conservation efforts are[...]
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Rutledge S. Boyes, Auteur ; Michael R. Perrin, AuteurMeyer's Parrot Poicephalus meyeri has the widest distributional range of any African parrot. There are six subspecies distributed throughout the African subtropics, all of which manage to breed successfully during the winter dry season when few [...]
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Stuart Taylor, Auteur ; Michael R. Perrin, AuteurAt the core of the suite of adaptive hatching hypotheses advanced to explain asynchronous hatching in birds is the assumption that if food is not limited then all the hatchlings will develop normally to adulthood. In this study Brown-headed Parr[...]
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Stuart Taylor, Auteur ; Michael R. Perrin, AuteurWe generated a generalised growth curve for the Brown-headed Parrot Poicephalus cryptoxanthus. The growth model correlated well with the data from captive-bred chicks and should be used by ecologists and aviculturists to monitor the health of ch[...]
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Henry Ndithia, Auteur ; Michael R. Perrin, Auteur ; Matthias Waltert, AuteurThe breeding biology of the Rosy-faced Lovebird Agapornis roseicollis was investigated in its natural habitat at three Namibian localities: Claratal, Hohewarte and Haris. The lovebird nests in colonies often shared by Sociable Weavers Philetairu[...]
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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[...]
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Shernice Soobramoney, Auteur ; Michael R. Perrin, AuteurThe foraging efficiencies of four sympatric southern African seed-eating birds, namely Bronze Mannikin Spermestes cucullatus, Cape Sparrow Passer melanurus, Southern Red Bishop Euplectes orix and Thick-billed Weaver Amblyospiza albifrons, and a [...]
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Henry Ndithia, Auteur ; Michael R. Perrin, AuteurThe natural diet of the Rosy-faced Lovebird in the wild was investigated from January-August 2004, at three Namibian locations: Claratal, Hohewarte and Haris. Foraging patterns, habitat use, daily feeding activities and preferred dietary species[...]
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Tiwonge I. Mzumara, Auteur ; Michael R. Perrin, Auteur ; Colleen T. Downs, AuteurDans Ostrich (85(3) 2014)Lilian's Lovebird Agapornis lilianae is regarded as a mopane Colophospermum mopane woodland specialist. Its global population is sparse and is spread along the Zambezi valley with little known about its current distribution and status. We explor[...]
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Stuart Taylor, Auteur ; Michael R. Perrin, AuteurTheoretical criteria have been advanced to describe conditions under which avian species are able to recognise the voices of neighbours, thereby reducing physical conflict. Namely, that the signal should be sufficiently stereotyped to allow spec[...]
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Rutledge S. Boyes, Auteur ; Michael R. Perrin, AuteurThe diet of Meyer's Parrot Poicephalus meyeri in the Okavango Delta, Botswana, was distinctly seasonal, comprising 71 different food items from 37 tree species in 16 families. During 480 road transects over 24 months, food item preferences close[...]
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Rutledge S. Boyes, Auteur ; Michael R. Perrin, AuteurThere are distinct differences in the way in which Poicephalus parrots utilise food resources within their distributional range. Our study evaluated the niche metrics of all Poicephalus parrots studied thus far for evidence of linkages between b[...]
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Rutledge S. Boyes, Auteur ; Michael R. Perrin, AuteurMeyer's Parrot Poicephalus meyeri is the only cavity-nesting bird species that breeds during winter in the Okavango Delta. This is facilitated by exclusive access to arthropod larvae incubating inside and feeding on fruits and pods in their diet[...]
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Stuart Taylor, Auteur ; Michael R. Perrin, AuteurRecognition by vocal characteristics between parents and their offspring is thought to be ubiquitous in colonially nesting avian species. The Brown-headed Parrot Poicephalus cryptoxanthus nests in hollows in trees. However, when the chicks fledg[...]
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H. A. King, Auteur ; Michael R. Perrin, AuteurThe three South African crane species - the Blue Crane (Anthropoides paradisea), the Wattled Crane (Bugeranus carunculatus) and the Grey Crowned Crane (Balearica regulorum regulorum) - are listed as threatened by the IUCN. This study investigate[...]
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Rowan O. Martin, Auteur ; Michael R. Perrin, Auteur ; Rutledge S. Boyes, Auteur ; Yilma D. Abebe, Auteur ; Nathaniel D. Annorbah, Auteur ; Augustus Asamoah, Auteur ; Dieudonne Bizimana, Auteur ; Kadiri S. Bobo, Auteur ; Nancy Bunbury, Auteur ; JOOST Brouwer, Auteur ; Moussa S. Diop, Auteur ; Mihret Ewnetu, Auteur ; Roger C. Fotso, Auteur ; Jerry Garteh, Auteur ; Philip Hall, Auteur ; Lars H. Holbech, Auteur ; Ireene R. Madindou, Auteur ; Fiona Maisels, Auteur ; Jerome Mokoko, Auteur ; Ronald Mulwa, Auteur ; Anna Reuleaux, Auteur ; Craig Symes, Auteur ; Simon Tamungang, Auteur ; Stuart Taylor, Auteur ; Simon Valle, Auteur ; Matthias Waltert, Auteur ; Mengistu Wondafrash, AuteurDans Ostrich (85(3) 2014)Parrot populations in Africa and Madagascar are declining and the need for conservation actions to address threats is increasingly recognised. Effective conservation requires a robust knowledge base on which decisions over appropriate actions ca[...]
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Henry Ndithia, Auteur ; Michael R. Perrin, AuteurEight Rosy-faced Lovebirds from two study sites and four colonies in Namibia's Claratal and Hohewarte districts were tagged and their local movements tracked using radio transmitters. The birds' movements averaged 415.7 +/- 391.3m in summer and [...]
