Search
Search results for
We found
13 results for you
-
The impact and control of alien aquatic vegetation in South African aquatic ecosystems
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MP Hill --- Weeds Division, South AfricaWater hyacinth, water lettuce, salvinia, parrot's feather and red water fern are South American aquatic plant species that have become invasive in aquatic ecosystems in South Africa. The lack of indigenous natural enemies and the presence of nutrient rich waters... -
Founder populations and the current status of exotic parrots in South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Craig T Symes --- School of Animal, Plant and Environmental Sciences, South AfricaParrots (families Psittacidae and Cacatuidae) are one of the most threatened taxa of birds, with a combination of threats to wild populations, including capture for the cage bird market, habitat modification and destruction, persecution, disease, and threats from introduced species... -
Insights into the feeding ecology of the Seychelles Black Parrot Coracopsis barklyi using two monitoring approaches
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Anna Reuleaux --- Seychelles Islands Foundation, Seychelles Heather Richards --- Seychelles Islands Foundation, Seychelles Terence Payet --- Seychelles Islands Foundation, Seychelles Pascal Villard --- Seychelles Islands Foundation, Seychelles Matthias Waltert --- Conservation Biology, Workgroup on Endangered Species, Germany Nancy Bunbury --- Seychelles Islands Foundation, SeychellesFeeding ecology is an important factor for the survival of a species and knowledge of its parameters is a prerequisite for successful conservation work. In this study we describe the feeding ecology of the endemic Seychelles Black Parrot Coracopsis barklyi... -
Fifteen years of annual Cape Parrot Poicephalus robustus censuses: current population trends and conservation contributions
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Colleen T Downs --- School of Life Sciences, South Africa Morgan Pfeiffer --- School of Life Sciences, South Africa Lorinda A Hart --- School of Life Sciences, South AfricaThe Cape Parrot Poicephalus robustus is endemic to South Africa and numbers have reportedly declined since the early 1900s. It is a forest specialist and food nomadic, moving between patches depending on fruit availability. This makes it difficult to estimate... -
Abundance of the endangered Cape parrot, Poicephalus robustus, in South Africa: implications for its survival
Item type: Journal Article • Journal: African Zoology • Authors: Colleen T. Downs --- School of Botany and Zoology, University of KwaZulu-Natal, South AfricaFactors affecting the decline of the endangered Cape parrot, which is endemic to South Africa, are presented. Its abundance and status were investigated during annual intensive national surveys. The merits of such a census are reported. Presence of birds was... -
Flocking dynamics and roosting behaviour of Meyer’s parrot (Poicephalus meyeri) in the Okavango Delta, Botswana
Item type: Journal Article • Journal: African Zoology • Authors: Rutledge S. Boyes --- University of KwaZulu-Natal, South Africa Michael R. Perrin --- University of KwaZulu-Natal, South AfricaFor most of the year, Meyer’s parrots in the Okavango Delta do not form large feeding flocks, and groups larger than two or three are probably the result of opportunistic aggregation at favoured food items after dispersion from communal roosts... -
Characteristics of roost cavities used by Lilian's Lovebird Agapornis lilianae in Liwonde National Park, Malawi
Item type: Journal Article • Journal: African Zoology • Authors: Tiwonge I Mzumara --- Research Centre for African Parrot Conservation, School of Life Sciences, South Africa Michael R Perrin --- Research Centre for African Parrot Conservation, School of Life Sciences, South Africa Colleen T Downs --- Research Centre for African Parrot Conservation, School of Life Sciences, South AfricaLilian's Lovebird Agapornis lilianae is a non-excavating cavity user of mopane Colophospermum mopane woodlands. We investigated roost characteristics of Lilian's Lovebirds in Liwonde National Park, Malawi. We quantified tree and roost site variables for roost and non-roost trees. Sixty-six roosts... -
Grey Parrots Psittacus erithacus in Kampala, Uganda – are they becoming suburbanised?
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Immaculate-Odd Irumba --- Department of Biological Sciences, Uganda Derek Pomeroy --- Department of Biological Sciences, Uganda Michael Perrin --- Research Centre for African Parrot Conservation, School of Life Sciences, South AfricaThe globally Vulnerable Grey Parrot (Psittacus erithacus) has been seen in Kampala, Uganda’s capital city, in increasing numbers in recent years. This apparently new behaviour of a typically forest species is helped by the presence of many large trees, which... -
Comparative performance of four survey methods for assessing Lilian’s Lovebird abundance in Liwonde National Park, Malawi
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Tiwonge I Mzumara --- School of Life Sciences, South Africa Michael R Perrin --- School of Life Sciences, South Africa Colleen T Downs --- School of Life Sciences, South AfricaMonitoring 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 any part of its range. We investigated the... -
Feeding ecology of Lilian’s Lovebird Agapornis lilianae in Liwonde National Park, Malawi
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Tiwonge I Mzumara --- School of Life Sciences, South Africa Mike R Perrin --- School of Life Sciences, South Africa Colleen T Downs --- School of Life Sciences, South AfricaLilian's Lovebird Agapornis lilianae is a small, near-threatened parrot resident in mopane Colophospermum mopane woodlands. We investigated its diet and foraging behaviour in Liwonde National Park, Malawi. We expected that Lilian's Lovebirds would show little specialisation for a particular food... -
The trade in the endangered African Grey Parrot Psittacus erithacus and the Timneh Parrot Psittacus timneh in Algeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sadek Atoussi --- , Algeria Daniel Bergin --- , United Kingdom Imane Razkallah --- , Algeria Vincent Nijman --- , United Kingdom Mouslim Bara --- , Algeria Zihad Bouslama --- , Algeria Moussa Houhamdi --- , AlgeriaThe global wildlife trade is considered one of the main threats to the conservation of a large number of imperilled species. African Grey parrots are one of the most heavily traded groups of birds, which led the International Union for... -
Monitoring an isolated population of Cape Parrots Poicephalus robustus in the Limpopo province, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kate F Carstens --- , South Africa Kirsten Wimberger --- , South Africa Rowan Martin --- , United Kingdom David Letsoalo --- , South Africa Craig T Symes --- , South AfricaCape Parrots Poicephalus robustus inhabit forest patches in South Africa with <1 800 individuals remain in the wild. A small, genetically isolated population occurs in the northern part of its range in the Limpopo province. There, annual counts indicated ∼100... -
Presence of the alien Rose-ringed Parakeet Psittacula krameri (Psittacidae) in Mozambique
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Francesca Romana Trezza --- University Eduardo Mondlane – Sapienza University of Rome, Mozambique Ivan da Costa Nerantzoulis --- , Mozambique Silvio Cianciullo --- University Eduardo Mondlane – Sapienza University of Rome, Mozambique Hugo Mabilana --- University Eduardo Mondlane, Mozambique Célia Macamo --- University Eduardo Mondlane, Mozambique Fabio Attorre --- Sapienza University of Rome, Italy Carlos Manuel Bento --- , Mozambique Paolo Ramoni-Perazzi --- University Eduardo Mondlane – Sapienza University of Rome, MozambiqueThe biology of the Rose-ringed Parakeet Psittacula krameri has been widely studied in many of its naturalized habitats around the world. However, its potential status and impacts may have gone unnoticed in regions with limited monitoring. In this report, we...