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Cowles Dam (26132828)


Authority Private
Management status PRIVATE LAND
Conservation status UNPROTECTED
IBA information SA021 - BLESBOKSPRUIT
Ramsar information
Heritage information
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Part of the Blesbokspruit Ramsar site; a dam, reedbeds, and marsh. With the exception of Southern Pochard and Fulvous Duck (high counts in summer 1994), waterfowl are more numerous in winter. In summer 1993 there were exceptional numbers of Ruff, Greyheaded Gull and White- winged Tern; the winter 1993 count shows large numbers of Dabchick, Sacred Ibis, Yellowbilled Duck, Redbilled Teal and Cape Shoveller; Moorhen were especially numerous in summer 1995, when the high summer biomass reflects the presence of 325 Greater Flamingo; flamingos are otherwise commoner in winter. Formerly an excellent site, but total counts and number of species are declining. In 1997 a large informal settlement was established on the eastern boundary; hunting and fishing are a severe threat; domestic dogs and cats an important threat. Reed encroachment is another big problem. In 2009 counts were suspended due to Sappi closing the area to the public for security reasons.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
269Avocet, PiedRecurvirostra avosetta27.3318  
67Bittern, LittleIxobrychus minutus13.677   
212Coot, Red-knobbedFulica cristata1897.00280   
50Cormorant, ReedPhalacrocorax africanus18.4337   
47Cormorant, White-breastedPhalacrocorax carbo17.4845   
202Crake, Baillon'sPorzana pusilla11.001
203Crake, BlackAmaurornis flavirostris15.0717
52Darter, AfricanAnhinga rufa11.553   
95Duck, African BlackAnas sparsa22.002   
101Duck, FulvousDendrocygna bicolor236.25222   
91Duck, Knob-billedSarkidiornis melanotos33.003   
103Duck, MaccoaOxyura maccoa16.0018   
104Duck, White-backedThalassornis leuconotus17.3319   
100Duck, White-facedDendrocygna viduata119.8079   
96Duck, Yellow-billedAnas undulata232.41259   
61Egret, CattleBubulcus ibis112.7538   
59Egret, LittleEgretta garzetta11.833   
60Egret, Yellow-billedEgretta intermedia25.6711   
86Flamingo, GreaterPhoenicopterus ruber178.00325   
87Flamingo, LesserPhoenicopterus minor1259.60127   
89Goose, EgyptianAlopochen aegyptiacus116.22156   
88Goose, Spur-wingedPlectropterus gambensis11.803   
5Grebe, Black-neckedPodiceps nigricollis18.3820   
4Grebe, Great CrestedPodiceps cristatus15.8215   
6Grebe, LittleTachybaptus ruficollis225.38203   
263Greenshank, CommonTringa nebularia11.252   
288Gull, Grey-headedLarus cirrocephalus116.12168   
72Hamerkop, HamerkopScopus umbretta11.001   
64Heron, BlackEgretta ardesiaca11.503   
55Heron, Black-headedArdea melanocephala15.2025   
56Heron, GoliathArdea goliath11.001   
63Heron, Green-backedButorides striata11.001   
54Heron, GreyArdea cinerea11.705   
57Heron, PurpleArdea purpurea12.005   
62Heron, SquaccoArdeola ralloides13.448   
81Ibis, African SacredThreskiornis aethiopicus126.38132   
83Ibis, GlossyPlegadis falcinellus119.5462   
84Ibis, HadedaBostrychia hagedash25.0019   
397Kingfisher, MalachiteAlcedo cristata11.402
394Kingfisher, PiedCeryle rudis11.142
247Lapwing, African WattledVanellus senegallus13.386   
245Lapwing, BlacksmithVanellus armatus115.0766   
167Marsh-harrier, AfricanCircus ranivorus11.252
509Martin, Brown-throatedRiparia paludicola11.001
210Moorhen, CommonGallinula chloropus216.90119   
69Night-Heron, Black-crownedNycticorax nycticorax14.3312  
361Owl, MarshAsio capensis11.332
233Plover, Common RingedCharadrius hiaticula22.002   
238Plover, Three-bandedCharadrius tricollaris13.5810   
102Pochard, SouthernNetta erythrophthalma259.03441 250 
197Rail, AfricanRallus caerulescens14.009
256Ruff, RuffPhilomachus pugnax171.82707  
258Sandpiper, CommonActitis hypoleucos12.003  
251Sandpiper, CurlewCalidris ferruginea22.002  
262Sandpiper, MarshTringa stagnatilis14.8310   
264Sandpiper, WoodTringa glareola16.3020   
94Shoveler, CapeAnas smithii226.73122   
250Snipe, AfricanGallinago nigripennis112.2531   
85Spoonbill, AfricanPlatalea alba11.672   
270Stilt, Black-wingedHimantopus himantopus111.7939  
253Stint, LittleCalidris minuta16.0010   
208Swamphen, African PurplePorphyrio madagascariensis15.8336  
98Teal, CapeAnas capensis110.9355   
99Teal, HottentotAnas hottentota231.0586   
97Teal, Red-billedAnas erythrorhyncha128.13150   
305Tern, WhiskeredChlidonias hybrida13.0010   
304Tern, White-wingedChlidonias leucopterus135.38240   
10008Wader, UnidentifiedN/A N/A22.002
686Wagtail, CapeMotacilla capensis26.2120
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Monday 18 June 2018 11:47
© Animal Demography Unit 2015
Department of Biological Sciences - University of Cape Town

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