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    Zwartkops River Estuary (33522538)

    Eastern Cape
    Card 510682
    Compiler 2
    Location code 33522538Zwartkops River Estuary (Eastern Cape)
    Start date 2011-07-18
    Season WWinter
    Start time 10:05
    End time 15:20
    Shoreline covered 80
    Openwater covered 90
    Total Species 37
    Total Count 2527
    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 Tide stayed low throughout count. Many threats to this urban estuary. Boat to vantage points along river and by foot on mudbanks
    Survey notes


    Add additional observers
    Observer NumberNameOptions
    0Gustav Aylward
     
    2Paul Martin
     

    Current data
    Ref #SpeciesCountBreeding
    Pairs    		Breeding
    indicator
    47Cormorant, White-breasted
    (Phalacrocorax lucidus)    		450
    48Cormorant, Cape
    (Phalacrocorax capensis)    		3330
    50Cormorant, Reed
    (Microcarbo africanus)    		920
    52Darter, African
    (Anhinga rufa)    		30
    54Heron, Grey
    (Ardea cinerea)    		10
    58Egret, Great
    (Ardea alba)    		10
    59Egret, Little
    (Egretta garzetta)    		860
    81Ibis, African Sacred
    (Threskiornis aethiopicus)    		590
    85Spoonbill, African
    (Platalea alba)    		270
    89Goose, Egyptian
    (Alopochen aegyptiaca)    		40
    94Shoveler, Cape
    (Anas smithii)    		50
    96Duck, Yellow-billed
    (Anas undulata)    		111Confirmed Breeding
    98Teal, Cape
    (Anas capensis)    		50
    167Harrier, African Marsh
    (Circus ranivorus)    		10
    231Oystercatcher, African
    (Haematopus moquini)    		280
    232Turnstone, Ruddy
    (Arenaria interpres)    		1190
    235Plover, White-fronted
    (Charadrius marginatus)    		620
    237Plover, Kittlitz's
    (Charadrius pecuarius)    		260
    239Plover, Greater Sand
    (Charadrius leschenaultii)    		40
    241Plover, Grey
    (Pluvialis squatarola)    		1820
    245Lapwing, Blacksmith
    (Vanellus armatus)    		240
    251Sandpiper, Curlew
    (Calidris ferruginea)    		380
    254Knot, Red
    (Calidris canutus)    		70
    263Greenshank, Common
    (Tringa nebularia)    		270
    266Godwit, Bar-tailed
    (Limosa lapponica)    		80
    267Curlew, Eurasian
    (Numenius arquata)    		30
    268Whimbrel, Eurasian
    (Numenius phaeopus)    		1030
    270Stilt, Black-winged
    (Himantopus himantopus)    		180
    287Gull, Kelp
    (Larus dominicanus)    		11100
    288Gull, Grey-headed
    (Chroicocephalus cirrocephalus)    		202Confirmed Breeding
    289Gull, Hartlaub's
    (Chroicocephalus hartlaubii)    		10
    290Tern, Caspian
    (Hydroprogne caspia)    		90
    291Tern, Common
    (Sterna hirundo)    		270
    298Tern, Greater Crested
    (Thalasseus bergii)    		10
    394Kingfisher, Pied
    (Ceryle rudis)    		170
    686Wagtail, Cape
    (Motacilla capensis)    		160
    10004Goose, Domestic
    (Anser anser domesticus)    		40


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    Thursday 11 December 2025 11:12
    FitzPatrick Institute of African Ornithology
    Department of Biological Sciences - University of Cape Town

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