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    Zwartkops River Estuary (33522538)

    Eastern Cape
    Card 510678
    Compiler 2
    Location code 33522538Zwartkops River Estuary (Eastern Cape)
    Start date 2023-07-02
    Season WWinter
    Start time 07:50
    End time 15:00
    Shoreline covered 80
    Openwater covered 89
    Total Species 43
    Total Count 4991
    Wetland Condition 3Very little standing water (low tide for estuaries
    Wetland Threats 15Pollution by domestic sewage
    Count Condition 5Ideal
    Count Type 5Mixed
    Nil Count (No birds present) 0There were CWAC species present
    Notes 190mm rain May/June - therefore good freshwater flow. Banks stayed exposed for whole count. Harmful algal bloom throughout estuary - poor water visibility. Many threats to this urban estuary. Boat use to get to vantage points & by foot on mudbanks
    Survey notes


    Add additional observers
    Observer NumberNameOptions
    0Arthur Rump
     
    2Paul Martin
     

    Current data
    Ref #SpeciesCountBreeding
    Pairs    		Breeding
    indicator
    6Grebe, Little
    (Tachybaptus ruficollis)    		160
    47Cormorant, White-breasted
    (Phalacrocorax lucidus)    		470
    48Cormorant, Cape
    (Phalacrocorax capensis)    		12590
    50Cormorant, Reed
    (Microcarbo africanus)    		2090
    52Darter, African
    (Anhinga rufa)    		110
    54Heron, Grey
    (Ardea cinerea)    		180
    56Heron, Goliath
    (Ardea goliath)    		20
    58Egret, Great
    (Ardea alba)    		70
    59Egret, Little
    (Egretta garzetta)    		1700
    81Ibis, African Sacred
    (Threskiornis aethiopicus)    		1300
    85Spoonbill, African
    (Platalea alba)    		360
    86Flamingo, Greater
    (Phoenicopterus roseus)    		680
    87Flamingo, Lesser
    (Phoeniconaias minor)    		80
    89Goose, Egyptian
    (Alopochen aegyptiaca)    		150
    94Shoveler, Cape
    (Anas smithii)    		30
    96Duck, Yellow-billed
    (Anas undulata)    		20
    98Teal, Cape
    (Anas capensis)    		70
    149Fish Eagle, African
    (Haliaeetus vocifer)    		10
    167Harrier, African Marsh
    (Circus ranivorus)    		10
    231Oystercatcher, African
    (Haematopus moquini)    		450
    232Turnstone, Ruddy
    (Arenaria interpres)    		210
    235Plover, White-fronted
    (Charadrius marginatus)    		560
    237Plover, Kittlitz's
    (Charadrius pecuarius)    		10
    239Plover, Greater Sand
    (Charadrius leschenaultii)    		20
    241Plover, Grey
    (Pluvialis squatarola)    		1460
    245Lapwing, Blacksmith
    (Vanellus armatus)    		370
    263Greenshank, Common
    (Tringa nebularia)    		290
    266Godwit, Bar-tailed
    (Limosa lapponica)    		150
    268Whimbrel, Eurasian
    (Numenius phaeopus)    		1320
    269Avocet, Pied
    (Recurvirostra avosetta)    		10
    270Stilt, Black-winged
    (Himantopus himantopus)    		750
    274Thick-knee, Water
    (Burhinus vermiculatus)    		130
    287Gull, Kelp
    (Larus dominicanus)    		21090
    288Gull, Grey-headed
    (Chroicocephalus cirrocephalus)    		1660
    289Gull, Hartlaub's
    (Chroicocephalus hartlaubii)    		270
    290Tern, Caspian
    (Hydroprogne caspia)    		60
    291Tern, Common
    (Sterna hirundo)    		330
    296Tern, Sandwich
    (Thalasseus sandvicensis)    		20
    298Tern, Greater Crested
    (Thalasseus bergii)    		230
    305Tern, Whiskered
    (Chlidonias hybrida)    		10
    394Kingfisher, Pied
    (Ceryle rudis)    		190
    395Kingfisher, Giant
    (Megaceryle maxima)    		20
    686Wagtail, Cape
    (Motacilla capensis)    		200


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    Thursday 11 December 2025 11:14
    FitzPatrick Institute of African Ornithology
    Department of Biological Sciences - University of Cape Town

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