Grootvaly on Blesbok (26162830) | |
|---|---|
Gauteng | |
| CWAC status | REGISTERED-COUNTED REGULARLY |
| Authority | Private |
| Management status | UNKNOWN |
| Conservation status | UNPROTECTED |
| IBA information | SA021 - BLESBOKSPRUIT |
| Ramsar information | |
| Heritage information | |
| View Cards | Click here |
Information |
|---|
| Date_registered |
| 1994-07-17 |
| Brief_description |
| Part of the Blesbokspruit system, with open water, reedbeds and marshy habitat. Supports a wide variety of waterbirds, usually in small to moderate numbers, but the winter 1994 count was relatively high, with maximum counts of Glossy Ibis, Egyptian and Spurwinged Geese, Yellowbilled Duck and Redbilled Teal. Number of species, total count and total biomass all show a decline during the survey period; winter counts of Greyheaded Gull, Purple Gallinule and several waterfowl are declining, while winter Glossy Ibis numbers crashed after 1994. In contrast, winter numbers of Sacred Ibis are increasing. Egrets, Squacco Heron and Black- crowned Night Heron occur predominantly in summer. Blesbokspruit is severely threatened by discharge of mine water which drastically increases total water volume, maintains artificially high water levels in the dry season, and contains many pollutants, including salt. |
| Spp | Common name | Taxonomic name | Min | Avg | Max | IBA | Subregional IBA | RAMSAR |
|---|---|---|---|---|---|---|---|---|
| 72 | Scopus umbretta | 1 | 1.67 | 2 | ||||
| 1016 | Anas platyrhynchos | 1 | 1.17 | 2 | ||||
| 256 | Calidris pugnax | 1 | 4.89 | 16 | ||||
| 269 | Avocet, Pied | Recurvirostra avosetta | 1 | 2.33 | 4 | |||
| 71 | Bittern, Eurasian | Botaurus stellaris | 1 | 1.00 | 1 | |||
| 67 | Bittern, Little | Ixobrychus minutus | 1 | 1.41 | 4 | |||
| 212 | Coot, Red-knobbed | Fulica cristata | 1 | 59.45 | 317 | |||
| 50 | Cormorant, Reed | Microcarbo africanus | 1 | 13.67 | 52 | |||
| 47 | Cormorant, White-breasted | Phalacrocorax lucidus | 1 | 4.00 | 25 | |||
| 203 | Crake, Black | Zaporina flavirostra | 1 | 5.31 | 24 | |||
| 52 | Darter, African | Anhinga rufa | 1 | 5.77 | 23 | |||
| 95 | Duck, African Black | Anas sparsa | 1 | 2.38 | 7 | |||
| 101 | Duck, Fulvous Whistling | Dendrocygna bicolor | 1 | 12.13 | 88 | |||
| 91 | Duck, Knob-billed | Sarkidiornis melanotos | 3 | 3.00 | 3 | |||
| 103 | Duck, Maccoa | Oxyura maccoa | 2 | 2.00 | 2 | |||
| 10014 | Duck, Unidentified | Anas sp. | 1 | 8.17 | 14 | |||
| 104 | Duck, White-backed | Thalassornis leuconotus | 3 | 3.00 | 3 | |||
| 100 | Duck, White-faced Whistling | Dendrocygna viduata | 1 | 44.18 | 386 | |||
| 96 | Duck, Yellow-billed | Anas undulata | 2 | 23.35 | 141 | |||
| 58 | Egret, Great | Ardea alba | 1 | 2.00 | 4 | |||
| 60 | Egret, Intermediate | Ardea intermedia | 1 | 4.09 | 13 | |||
| 59 | Egret, Little | Egretta garzetta | 1 | 7.06 | 57 | |||
| 61 | Egret, Western Cattle | Bubulcus ibis | 1 | 60.76 | 617 | |||
| 149 | Fish Eagle, African | Haliaeetus vocifer | 1 | 1.00 | 1 | |||
| 86 | Flamingo, Greater | Phoenicopterus roseus | 4 | 7.40 | 12 | |||
| 87 | Flamingo, Lesser | Phoeniconaias minor | 2 | 7.33 | 14 | |||
| 205 | Flufftail, Red-chested | Sarothrura rufa | 1 | 1.00 | 1 | |||
| 92 | Goose, African Pygmy | Nettapus auritus | 1 | 1.00 | 1 | |||
| 89 | Goose, Egyptian | Alopochen aegyptiaca | 7 | 29.27 | 118 | |||
| 88 | Goose, Spur-winged | Plectropterus gambensis | 1 | 14.83 | 154 | |||
| 4 | Grebe, Great Crested | Podiceps cristatus | 1 | 1.00 | 1 | |||
| 6 | Grebe, Little | Tachybaptus ruficollis | 1 | 6.82 | 23 | |||
| 263 | Greenshank, Common | Tringa nebularia | 1 | 1.33 | 2 | |||
| 288 | Gull, Grey-headed | Chroicocephalus cirrocephalus | 1 | 13.91 | 76 | |||
| 167 | Harrier, African Marsh | Circus ranivorus | 1 | 1.25 | 2 | |||
| 169 | Harrier, Black | Circus maurus | 1 | 1.00 | 1 | |||
| 166 | Harrier, Western Marsh | Circus aeruginosus | 1 | 1.00 | 1 | |||
| 64 | Heron, Black | Egretta ardesiaca | 1 | 3.58 | 13 | |||
| 55 | Heron, Black-headed | Ardea melanocephala | 1 | 3.18 | 10 | |||
| 56 | Heron, Goliath | Ardea goliath | 1 | 2.71 | 8 | |||
| 54 | Heron, Grey | Ardea cinerea | 1 | 3.40 | 13 | |||
| 57 | Heron, Purple | Ardea purpurea | 1 | 2.72 | 12 | |||
| 62 | Heron, Squacco | Ardeola ralloides | 1 | 7.93 | 27 | |||
| 63 | Heron, Striated | Butorides striata | 1 | 1.60 | 3 | |||
| 81 | Ibis, African Sacred | Threskiornis aethiopicus | 1 | 25.24 | 89 | |||
| 83 | Ibis, Glossy | Plegadis falcinellus | 1 | 123.11 | 1015 | 1000 | 500 | |
| 84 | Ibis, Hadada | Bostrychia hagedash | 1 | 9.64 | 50 | |||
| 228 | Jacana, African | Actophilornis africanus | 1 | 5.52 | 17 | |||
| 395 | Kingfisher, Giant | Megaceryle maxima | 1 | 1.17 | 2 | |||
| 397 | Kingfisher, Malachite | Corythornis cristatus | 1 | 2.05 | 5 | |||
| 394 | Kingfisher, Pied | Ceryle rudis | 1 | 2.80 | 8 | |||
| 247 | Lapwing, African Wattled | Vanellus senegallus | 2 | 2.00 | 2 | |||
| 245 | Lapwing, Blacksmith | Vanellus armatus | 2 | 14.88 | 36 | |||
| 509 | Martin, Brown-throated | Riparia paludicola | 1 | 1.00 | 1 | |||
| 210 | Moorhen, Common | Gallinula chloropus | 4 | 28.68 | 126 | |||
| 69 | Night Heron, Black-crowned | Nycticorax nycticorax | 1 | 4.21 | 28 | |||
| 233 | Plover, Common Ringed | Charadrius hiaticula | 1 | 1.00 | 1 | |||
| 238 | Plover, Three-banded | Charadrius tricollaris | 1 | 3.19 | 8 | |||
| 102 | Pochard, Southern | Netta erythrophthalma | 1 | 4.92 | 24 | |||
| 197 | Rail, African | Rallus caerulescens | 1 | 2.22 | 8 | -1 | ||
| 258 | Sandpiper, Common | Actitis hypoleucos | 1 | 1.80 | 6 | |||
| 251 | Sandpiper, Curlew | Calidris ferruginea | 1 | 1.00 | 1 | |||
| 262 | Sandpiper, Marsh | Tringa stagnatilis | 1 | 1.00 | 1 | |||
| 264 | Sandpiper, Wood | Tringa glareola | 1 | 3.17 | 8 | |||
| 90 | Shelduck, South African | Tadorna cana | 1 | 2.00 | 3 | |||
| 94 | Shoveler, Cape | Anas smithii | 2 | 4.86 | 8 | |||
| 250 | Snipe, African | Gallinago nigripennis | 1 | 2.33 | 9 | |||
| 85 | Spoonbill, African | Platalea alba | 1 | 2.82 | 8 | |||
| 270 | Stilt, Black-winged | Himantopus himantopus | 1 | 2.82 | 8 | |||
| 253 | Stint, Little | Calidris minuta | 2 | 2.50 | 3 | |||
| 76 | Stork, Yellow-billed | Mycteria ibis | 1 | 1.00 | 1 | |||
| 208 | Swamphen, African | Porphyrio madagascariensis | 1 | 5.06 | 14 | |||
| 99 | Teal, Blue-billed | Anas hottentota | 1 | 13.84 | 38 | |||
| 98 | Teal, Cape | Anas capensis | 2 | 3.67 | 5 | |||
| 97 | Teal, Red-billed | Anas erythrorhyncha | 1 | 11.11 | 180 | |||
| 305 | Tern, Whiskered | Chlidonias hybrida | 1 | 19.48 | 198 | 150 | 75 | 85 |
| 304 | Tern, White-winged | Chlidonias leucopterus | 1 | 3.00 | 11 | |||
| 274 | Thick-knee, Water | Burhinus vermiculatus | 4 | 4.00 | 4 | |||
| 686 | Wagtail, Cape | Motacilla capensis | 1 | 5.89 | 21 | |||
| 689 | Wagtail, Western Yellow | Motacilla flava | 1 | 1.00 | 1 |
Sunday 22 December 2024 05:23
FitzPatrick Institute of African Ornithology
Department
of Biological Sciences - University of Cape Town
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