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Animal Science and Veterinary
South Africa
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 39 1247 1153 11 10 425 7199
Ecology and Evolution 40 6029 5818 64 58 464 7955

Colleen T. Downs publications per year

The chart shows the history of publications by Colleen T. Downs between 1990 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Colleen T. Downs published across 37 years, from 1990 to 2026, averaging 15.3 papers a year. Output peaked at 53 publications in 2020. 40 of the 567 publications appeared in the last two years.

No. of publications
10 20 30 40 50
Bar chart. Horizontal axis: year, 1990 to 2026. Vertical axis: number of publications, 0 to 53. Peak 53 publications in 2020. 1990: 3 publications 1991: 3 publications 1992: 0 publications 1993: 0 publications 1994: 2 publications 1995: 2 publications 1996: 2 publications 1997: 4 publications 1998: 1 publication 1999: 1 publication 2000: 2 publications 2001: 7 publications 2002: 12 publications 2003: 7 publications 2004: 6 publications 2005: 8 publications 2006: 6 publications 2007: 3 publications 2008: 17 publications 2009: 19 publications 2010: 26 publications 2011: 11 publications 2012: 17 publications 2013: 18 publications 2014: 15 publications 2015: 30 publications 2016: 25 publications 2017: 35 publications 2018: 22 publications 2019: 26 publications 2020: 53 publications 2021: 43 publications 2022: 42 publications 2023: 31 publications 2024: 28 publications 2025: 38 publications 2026: 2 publications
1990 2026

567 publications in total across all disciplines

View publications per year as a table
Colleen T. Downs: publications per year, 1990 to 2026
Year Publications
1990 3
1991 3
1992 0
1993 0
1994 2
1995 2
1996 2
1997 4
1998 1
1999 1
2000 2
2001 7
2002 12
2003 7
2004 6
2005 8
2006 6
2007 3
2008 17
2009 19
2010 26
2011 11
2012 17
2013 18
2014 15
2015 30
2016 25
2017 35
2018 22
2019 26
2020 53
2021 43
2022 42
2023 31
2024 28
2025 38
2026 2
Total 567
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Colleen T. Downs publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Colleen T. Downs sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 84 bars. Horizontal axis: publications, 29–33 to 442+. Vertical axis: number of scientists, 0 to 109. Most scientists, 109, have 119–123 publications. The last bar groups every scientist with 442 publications or more. The highlighted bar, 424–428 publications, is where this scientist sits. 29–33 publications: 1 scientist 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29–33 publications 442+

This scientist: 425 publications — 96th percentile

96% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

View publications distribution as a table
Number of Animal Science and Veterinary scientists by publication count, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
Publications Scientists This scientist
29–33 1
34–38 6
39–43 17
44–48 23
49–53 28
54–58 44
59–63 66
64–68 75
69–73 71
74–78 85
79–83 108
84–88 105
89–93 84
94–98 103
99–103 97
104–108 95
109–113 89
114–118 88
119–123 109
124–128 93
129–133 89
134–138 95
139–143 92
144–148 80
149–153 75
154–158 74
159–163 67
164–168 53
169–173 62
174–178 63
179–183 50
184–188 55
189–193 50
194–198 27
199–203 44
204–208 31
209–213 28
214–218 38
219–223 33
224–228 36
229–233 29
234–238 35
239–243 23
244–248 24
249–253 29
254–258 28
259–263 21
264–268 25
269–273 11
274–278 18
279–283 13
284–288 18
289–293 10
294–298 12
299–303 11
304–308 15
309–313 14
314–318 14
319–323 8
324–328 8
329–333 13
334–338 14
339–343 13
344–348 10
349–353 11
354–358 5
359–363 8
364–368 8
369–373 6
374–378 7
379–383 8
384–388 3
389–393 4
394–398 5
399–403 8
404–408 5
409–413 4
414–418 3
419–423 8
424–428 5 425
429–433 3
434–438 5
439–441 5
442+ 99
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Colleen T. Downs D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Colleen T. Downs sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 58 bars. Horizontal axis: D-Index, 20 to 77+. Vertical axis: number of scientists, 0 to 158. Most scientists, 158, have 31 D-Index. The last bar groups every scientist with 77 D-Index or more. The highlighted bar, 39 D-Index, is where this scientist sits. 20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 39 D-Index — 61st percentile

61% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

View D-Index distribution as a table
Number of Animal Science and Veterinary scientists by D-index, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
D-Index Scientists This scientist
20 5
21 22
22 31
23 44
24 53
25 66
26 80
27 101
28 106
29 116
30 154
31 158
32 143
33 137
34 126
35 134
36 112
37 115
38 105
39 111 39
40 107
41 87
42 74
43 62
44 61
45 41
46 51
47 43
48 28
49 47
50 40
51 34
52 33
53 43
54 16
55 32
56 21
57 18
58 28
59 33
60 17
61 21
62 18
63 21
64 9
65 20
66 11
67 16
68 12
69 17
70 13
71 15
72 11
73 11
74 14
75 5
76 6
77+ 100
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Research.com Recognitions

  • 2026 - Research.com Animal Science and Veterinary in South Africa Leader Award

Overview

Colleen T. Downs is affiliated with the University of KwaZulu-Natal in South Africa. Their research primarily spans the field of Environmental Science, with a total of 388 publications contributing to this area. Within this broad field, Downs has focused on several subfields including Ecology, Nature and Landscape Conservation, Ecology, Evolution, Behavior and Systematics, Global and Planetary Change, and Ecological Modeling.

Their work addresses key topics within environmental and wildlife research, notably:

  • Wildlife Ecology and Conservation
  • Ecology and Vegetation Dynamics Studies
  • Avian ecology and behavior
  • Animal Ecology and Behavior Studies
  • Wildlife-Road Interactions and Conservation
  • Fish Ecology and Management Studies
  • Species Distribution and Climate Change

Downs has contributed to multiple papers in various scientific journals. Some recent publications include:

  • A global horizon scan of the future impacts of robotics and autonomous systems on urban ecosystems, 2021, Nature Ecology & Evolution
  • The future of sub-Saharan Africa's biodiversity in the face of climate and societal change, 2022, Frontiers in Ecology and Evolution
  • Effects of habitat-patch size and patch isolation on the diversity of forest birds in the urban-forest mosaic of Durban, South Africa, 2020, Urban Ecosystems
  • Can I afford to publish? A dilemma for African scholars, 2021, Ecology Letters
  • Snapshot Safari: A large-scale collaborative to monitor Africa's remarkable biodiversity, 2021, South African Journal of Science

Frequent collaborators in their research include:

  • David A. Ehlers Smith
  • Yvette C. Ehlers Smith
  • Tinyiko C. Shivambu
  • Ndivhuwo Shivambu
  • Gordon O'Brien

Downs has published extensively in a range of academic venues. Publications appear most often in:

  • African Journal of Ecology
  • Ostrich
  • Global Ecology and Conservation
  • Urban Ecosystems
  • Journal für Ornithologie

Best Publications

  • Impact of protection on nest take and nesting success of parrots in Africa, Asia and Australasia

    D. J. Pain;T. L. F. Martins;M. Boussekey;S. H. Diaz

  • A global horizon scan of the future impacts of robotics and autonomous systems on urban ecosystems

    Mark A. Goddard;Mark A. Goddard;Zoe G. Davies;Solène Guenat;Mark J. Ferguson

  • The role of avian frugivores in germination of seeds of fleshy-fruited invasive alien plants

    Lorinda A. Jordaan;Steven D. Johnson;Colleen T. Downs

  • Impact of land use on occupancy and abundance of terrestrial mammals in the Drakensberg Midlands, South Africa

    Tharmalingam Ramesh;Colleen T. Downs

  • The future of sub-Saharan Africa’s biodiversity in the face of climate and societal change

    Unknown

  • Use of an unmanned aerial vehicle (drone) to survey Nile crocodile populations: A case study at Lake Nyamithi, Ndumo game reserve, South Africa

    Mohamed A. Ezat;Camille J. Fritsch;Colleen T. Downs

  • Sugar digestion efficiencies of Gurney's sugarbirds, malachite sunbirds, and black sunbirds.

    Colleen T. Downs

  • A survey of wildlife rehabilitation in South Africa: is there a need for improved management?

    K. Wimberger;C. T. Downs;R. S. Boyes

  • Impact of farmland use on population density and activity patterns of serval in South Africa

    Tharmalingam Ramesh;Colleen T. Downs

  • NOCTURNAL HETEROTHERMY AND TORPOR IN THE MALACHITE SUNBIRD (NECTARINIA FAMOSA)

    Colleen T. Downs;Mark Brown

  • Diet of the Cape Parrot, Poicephalus robustus, in Afromontane forests in KwaZulu-Natal, South Africa

    J.O. Wirminghaus;Colleen T. Downs;C.T. Symes;M.R. Perrin

  • Abundance and activity patterns of the Cape parrot (Poicephalus robustus) in two afromontane forests in South Africa

    J.O. Wirminghaus;Colleen T. Downs;M.R. Perrin;C.T. Symes

  • Abundance and home ranges of feral cats in an urban conservancy where there is supplemental feeding: a case study from South Africa

    Jaclyn Tennent;Colleen T. Downs

  • Physiological variation in amethyst sunbirds (Chalcomitra amethystina) over an altitudinal gradient in winter.

    Claire V. Lindsay;Colleen T. Downs;Mark Brown

  • How to build science-action partnerships for local land-use planning and management: Lessons from Durban, South Africa

    Jessica Cockburn;Mathieu Rouget;Rob Slotow;Debra Roberts

  • Diet of the crowned eagle ( Stephanoaetus coronatus ) in an urban landscape: potential for human-wildlife conflict?

    Shane C. McPherson;Mark Brown;Colleen T. Downs

  • Fruit nutritional composition and non-nutritive traits of indigenous South African tree species

    A.-L. Wilson;C.T. Downs

  • More than eating dirt: a review of avian geophagy‡

    Colleen T. Downs;Ian P. Bredin;Peter D. Wragg;Peter D. Wragg

  • The role of shading behaviour in the thermoregulation of breeding crowned plovers (Vanellus coronatus)

    Mark Brown;Colleen T Downs

  • Seasonal effects on thermoregulatory responses of the Rock Kestrel, Falco rupicolis

    N.G. Bush;M. Brown;C.T. Downs

  • Body temperature and basking behaviour of Nile crocodiles (Crocodylus niloticus) during winter

    Colleen T. Downs;Cathy Greaver;Ricky Taylor

  • Postrelease success of two rehabilitated vervet monkey (Chlorocebus aethiops) troops in KwaZulu-Natal, South Africa.

    Kirsten Wimberger;Colleen T Downs;Michael R Perrin

Frequent Co-Authors

Steven D. Johnson
Steven D. Johnson University of KwaZulu-Natal
Keith L. Bildstein
Keith L. Bildstein Hawk Mountain Sanctuary
Kevin P. Kirkman
Kevin P. Kirkman University of KwaZulu-Natal
Martyn C. Lucas
Martyn C. Lucas Durham University
Ara Monadjem
Ara Monadjem University of Pretoria
Carlos A. Peres
Carlos A. Peres University of East Anglia
Victor Wepener
Victor Wepener North-West University
Graham Jewitt
Graham Jewitt IHE Delft Institute for Water Education
Patrick J. O’Farrell
Patrick J. O’Farrell University of Cape Town
Michael J. Lawes
Michael J. Lawes University of KwaZulu-Natal

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