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Rynfield Dam (26092821)

Gauteng

CWAC status DISCONTINUED
Authority Private
Management status UNKNOWN
Conservation status UNPROTECTED
IBA information
Ramsar information
Heritage information
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Information 

Date_registered
1993-01-22
Brief_description
Two dams, the smaller holding treated effluent from an adjacent sewage works; also some marshy areas along streams. A good variety of waterbirds occurs, including Great Crested Grebe, Goliath and Purple Herons, Little Bittern, Glossy Ibis, Black Crake and Wattled Plover, and good numbers of Purple Gallinule. Numbers of cormorants and Cattle Egret peak in summer, but Dabchick, Blackheaded Heron, Hadeda Ibis, Egyptian Goose, Moorhen, Redknobbed Coot and Greyheaded Gull are more numerous in winter. Exceptionally good counts of Reed Cormorant and Cattle Egret were recorded in summer 1997. A critical threat on the larger dam is jetski boating in the shallow headwaters, which were formerly excellent for waders but now rarely hold any birds; power boats keep to deep water at the lower end of the dam.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
IBA
RAMSAR
269Avocet, PiedRecurvirostra avosetta22.806  
67Bittern, LittleIxobrychus minutus11.001   
212Coot, Red-knobbedFulica cristata27105.31332   
50Cormorant, ReedPhalacrocorax africanus735.69183   
47Cormorant, White-breastedPhalacrocorax carbo16.8918   
203Crake, BlackAmaurornis flavirostris12.505
52Darter, AfricanAnhinga rufa15.4013   
95Duck, African BlackAnas sparsa11.001   
101Duck, FulvousDendrocygna bicolor1010.0010   
1016Duck, MallardAnas platyrhynchos22.002
104Duck, White-backedThalassornis leuconotus22.002   
100Duck, White-facedDendrocygna viduata221.0061   
96Duck, Yellow-billedAnas undulata19.3323   
61Egret, CattleBubulcus ibis1141.45967   
59Egret, LittleEgretta garzetta16.1419   
60Egret, Yellow-billedEgretta intermedia12.333   
89Goose, EgyptianAlopochen aegyptiacus310.0920   
88Goose, Spur-wingedPlectropterus gambensis11.001   
4Grebe, Great CrestedPodiceps cristatus12.605   
6Grebe, LittleTachybaptus ruficollis16.0011   
288Gull, Grey-headedLarus cirrocephalus312.3346   
64Heron, BlackEgretta ardesiaca11.402   
55Heron, Black-headedArdea melanocephala522.5466   
56Heron, GoliathArdea goliath12.144   
54Heron, GreyArdea cinerea11.503   
57Heron, PurpleArdea purpurea11.142   
62Heron, SquaccoArdeola ralloides12.644   
81Ibis, African SacredThreskiornis aethiopicus111.6429   
83Ibis, GlossyPlegadis falcinellus19.1319   
84Ibis, HadedaBostrychia hagedash621.0967   
394Kingfisher, PiedCeryle rudis11.001
247Lapwing, African WattledVanellus senegallus23.007   
245Lapwing, BlacksmithVanellus armatus216.0025   
509Martin, Brown-throatedRiparia paludicola11.001
210Moorhen, CommonGallinula chloropus820.9238   
69Night-Heron, Black-crownedNycticorax nycticorax11.502  
237Plover, Kittlitz'sCharadrius pecuarius22.002   
238Plover, Three-bandedCharadrius tricollaris36.0012   
102Pochard, SouthernNetta erythrophthalma14.6014   
256Ruff, RuffPhilomachus pugnax911.0013  
258Sandpiper, CommonActitis hypoleucos44.004  
251Sandpiper, CurlewCalidris ferruginea44.505  
262Sandpiper, MarshTringa stagnatilis44.505   
264Sandpiper, WoodTringa glareola14.007   
94Shoveler, CapeAnas smithii24.0010   
250Snipe, AfricanGallinago nigripennis17.8016   
85Spoonbill, AfricanPlatalea alba12.005   
270Stilt, Black-wingedHimantopus himantopus23.506  
253Stint, LittleCalidris minuta38.5014   
208Swamphen, African PurplePorphyrio madagascariensis112.1730  
98Teal, CapeAnas capensis66.006   
99Teal, HottentotAnas hottentota24.9011   
97Teal, Red-billedAnas erythrorhyncha214.1055   
305Tern, WhiskeredChlidonias hybrida315.3333   
304Tern, White-wingedChlidonias leucopterus1949.0079   
686Wagtail, CapeMotacilla capensis414.4645
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Wednesday 20 September 2017 09:36
© Animal Demography Unit 2015
Department of Biological Sciences - University of Cape Town

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