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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.

Spp	Common name	Taxonomic name	Min	Avg	Max
256		Calidris pugnax	9	11.00	13
1016		Anas platyrhynchos	2	2.00	2
269	Avocet, Pied	Recurvirostra avosetta	2	2.80	6
67	Bittern, Little	Ixobrychus minutus	1	1.00	1
212	Coot, Red-knobbed	Fulica cristata	27	105.31	332
50	Cormorant, Reed	Microcarbo africanus	7	35.69	183
47	Cormorant, White-breasted	Phalacrocorax lucidus	1	6.89	18
203	Crake, Black	Zaporina flavirostra	1	2.50	5
52	Darter, African	Anhinga rufa	1	5.40	13
95	Duck, African Black	Anas sparsa	1	1.00	1
101	Duck, Fulvous Whistling	Dendrocygna bicolor	10	10.00	10
104	Duck, White-backed	Thalassornis leuconotus	2	2.00	2
100	Duck, White-faced Whistling	Dendrocygna viduata	2	21.00	61
96	Duck, Yellow-billed	Anas undulata	1	9.33	23
60	Egret, Intermediate	Ardea intermedia	1	2.33	3
59	Egret, Little	Egretta garzetta	1	6.14	19
61	Egret, Western Cattle	Bubulcus ibis	1	141.45	967
89	Goose, Egyptian	Alopochen aegyptiaca	3	10.09	20
88	Goose, Spur-winged	Plectropterus gambensis	1	1.00	1
4	Grebe, Great Crested	Podiceps cristatus	1	2.60	5
6	Grebe, Little	Tachybaptus ruficollis	1	6.00	11
288	Gull, Grey-headed	Chroicocephalus cirrocephalus	3	12.33	46
64	Heron, Black	Egretta ardesiaca	1	1.40	2
55	Heron, Black-headed	Ardea melanocephala	5	22.54	66
56	Heron, Goliath	Ardea goliath	1	2.14	4
54	Heron, Grey	Ardea cinerea	1	1.50	3
57	Heron, Purple	Ardea purpurea	1	1.14	2
62	Heron, Squacco	Ardeola ralloides	1	2.64	4
81	Ibis, African Sacred	Threskiornis aethiopicus	1	11.64	29
83	Ibis, Glossy	Plegadis falcinellus	1	9.13	19
84	Ibis, Hadada	Bostrychia hagedash	6	21.09	67
394	Kingfisher, Pied	Ceryle rudis	1	1.00	1
247	Lapwing, African Wattled	Vanellus senegallus	2	3.00	7
245	Lapwing, Blacksmith	Vanellus armatus	2	16.00	25
509	Martin, Brown-throated	Riparia paludicola	1	1.00	1
210	Moorhen, Common	Gallinula chloropus	8	20.92	38
69	Night Heron, Black-crowned	Nycticorax nycticorax	1	1.50	2
237	Plover, Kittlitz's	Charadrius pecuarius	2	2.00	2
238	Plover, Three-banded	Charadrius tricollaris	3	6.00	12
102	Pochard, Southern	Netta erythrophthalma	1	4.60	14
258	Sandpiper, Common	Actitis hypoleucos	4	4.00	4
251	Sandpiper, Curlew	Calidris ferruginea	4	4.50	5
262	Sandpiper, Marsh	Tringa stagnatilis	4	4.50	5
264	Sandpiper, Wood	Tringa glareola	1	4.00	7
94	Shoveler, Cape	Anas smithii	2	4.00	10
250	Snipe, African	Gallinago nigripennis	1	7.80	16
85	Spoonbill, African	Platalea alba	1	2.00	5
270	Stilt, Black-winged	Himantopus himantopus	2	3.50	6
253	Stint, Little	Calidris minuta	3	8.50	14
208	Swamphen, African	Porphyrio madagascariensis	1	12.17	30
99	Teal, Blue-billed	Anas hottentota	2	4.90	11
98	Teal, Cape	Anas capensis	6	6.00	6
97	Teal, Red-billed	Anas erythrorhyncha	2	14.10	55
305	Tern, Whiskered	Chlidonias hybrida	3	15.33	33
304	Tern, White-winged	Chlidonias leucopterus	19	49.00	79
686	Wagtail, Cape	Motacilla capensis	4	14.46	45

Tuesday 31 December 2024 04:22
FitzPatrick Institute of African Ornithology
Department of Biological Sciences - University of Cape Town

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Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License

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Rynfield Dam (26092821)

Gauteng

Information