| Impact of protection on nest take and nesting success of parrots in Africa, Asia and Australasia DJ Pain, TLF Martins, M Boussekey, SH Diaz, CT Downs, JMM Ekstrom, ... Animal Conservation 9 (3), 322-330, 2006 | 83 | 2006 |
| Response of avian nectarivores to the flowering of Aloe marlothii: a nectar oasis during dry South African winters CT Symes, SW Nicolson, AE McKechnie Journal of Ornithology 149 (1), 13-22, 2008 | 68 | 2008 |
| Abundance and activity patterns of the Cape Parrot (Poicephalus robustus) in two afromontane forests in South Africa JO Wirminghaus, CT Downs, MR Perrin, CT Symes African Zoology 36 (1), 71-77, 2001 | 51 | 2001 |
| Diet of the cape parrot, Poicephalus robustus, in afromontane forests in Kwazulu-Natal, South Africa JO Wirminghaus, CT Downs, CT Symes, MR Perrin Ostrich-Journal of African Ornithology 73 (1-2), 20-25, 2002 | 49 | 2002 |
| The response of a New Guinean avifauna to conversion of forest to small‐scale agriculture SJ Marsden, CT Symes, AL Mack Ibis 148 (4), 629-640, 2006 | 48 | 2006 |
| Research and conservation of the larger parrots of Africa and Madagascar: a review of knowledge gaps and opportunities RO Martin, MR Perrin, RS Boyes, YD Abebe, ND Annorbah, A Asamoah, ... Ostrich 85 (3), 205-233, 2014 | 43 | 2014 |
| Feeding biology of the Greyheaded Parrot, Poicephalus fuscicollis suahelicus (Reichenow), in Northern Province, South Africa CT Symes, MR Perrin Emu-Austral Ornithology 103 (1), 49-58, 2003 | 43 | 2003 |
| Production of copious dilute nectar in the bird-pollinated African succulent Aloe marlothii (Asphodelaceae) CT Symes, SW Nicolson South African Journal of Botany 74 (4), 598-605, 2008 | 37 | 2008 |
| Geophagy in birds of Crater Mountain wildlife management area, Papua New Guinea CT Symes, JC Hughes, AL Mack, SJ Marsden Journal of Zoology 268 (1), 87-96, 2006 | 36 | 2006 |
| Conservation of the Cape Parrot in southern Africa JD Wirminghaus, CT Downs, CT Symes, MR Perrin South African Journal of Wildlife Research-24-month delayed open access 29 …, 1999 | 36 | 1999 |
| Breeding biology of the Greyheaded Parrot (Poicephalus fuscicollis suahelicus) in the wild CT Symes, MR Perrin Emu-Austral Ornithology 104 (1), 45-57, 2004 | 35 | 2004 |
| Appearances can be deceiving: pollination in two sympatric winter-flowering Aloe species CT Symes, H Human, SW Nicolson South African Journal of Botany 75 (4), 668-674, 2009 | 34 | 2009 |
| Breeding biology of the Cape Parrot, Poicephalus robustus JO Wirminghaus, CT Downs, MR Perrin, CT Symes Ostrich-Journal of African Ornithology 72 (3-4), 159-164, 2001 | 34 | 2001 |
| Resource partitioning of sympatric small mammals in an A frican forest‐grassland vegetation mosaic CT Symes, JW Wilson, SM Woodborne, ZS Shaikh, M Scantlebury Austral Ecology 38 (6), 721-729, 2013 | 31 | 2013 |
| Fruiting in two afromontane forests in KwaZulu-Natal, South Africa: the habitat type of the endangered Cape Parrot Poicephalus robustus JO Wirminghaus, CT Downs, CT Symes, MR Perrin South African Journal of Botany 67 (2), 325-332, 2001 | 29 | 2001 |
| The nutritional significance of a winter‐flowering succulent for opportunistic avian nectarivores CT Symes, AE McKechnie, SW Nicolson, SM Woodborne Ibis 153 (1), 110-121, 2011 | 25 | 2011 |
| Vocalisations and behaviours of the Cape parrot Poicephalus robustus (Psittaciformes: Psittacidae) MR Wirminghaus, D JO, S CT, D CT Durban Museum Novitates 25 (1), 12-17, 2000 | 25 | 2000 |
| Migratory connectivity and conservation of the Amur Falcon Falco amurensis: a stable isotope perspective CT Symes, S Woodborne Bird Conservation International 20 (2), 134-148, 2010 | 23 | 2010 |
| Species richness and seasonality of forest avifauna in three South African afromontane forests CT Symes, J Olaf Wirminghaus, CT Downs, M Louette Ostrich 73 (3-4), 106-113, 2002 | 23 | 2002 |
| The birds and the seeds: opportunistic avian nectarivores enhance reproduction in an endemic montane aloe G Arena, CT Symes, ETF Witkowski Plant Ecology 214 (1), 35-47, 2013 | 22 | 2013 |
Colleen DownsProfessor, School of Life Sciences, University of KwaZulu-Natal, Centre for Invasion Biologyכתובת אימייל מאומתת בדומיין ukzn.ac.za
