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    Zandvlei: Upper Estuary (34061828)

    Western Cape
    Card 504549
    Compiler 10691
    Location code 34061828Zandvlei: Upper Estuary (Western Cape)
    Start date 2014-07-19
    Season WWinter
    Start time 08:10
    End time 10:15
    Shoreline covered 90
    Openwater covered 95
    Total Species 32
    Total Count 1336
    Wetland Condition 2Partially full (mid tide for estuaries)
    Wetland Threats
    Count Condition 3Moderate
    Count Type 5Mixed
    Nil Count (No birds present) 0There were CWAC species present
    Notes Preceeding 3 days there was heavy rainfall and the flow rate from the catchment was heavy bring plenty of silt. The mouth of the estuary was open as it is through the winter months as per the management plan. The flow rate of the Keysers and Westlake Rivers under the railway bridge was 1 metre per 5 seconds. The Keysers River had silt to the surface and was very turbid. At times it was quite gloomy with heavy cloud overhead from the NW. It did not rain though. Wind was light to moderate at ground level. The weather improved by becoming sunny with dispersed cloud. Wind moderating at times from the west. Interesting observation along the total western shoreline was that clear water was only visible at the very edge of the bank by about 5cm. The main water body was a brown coloured. Observed were Reed and Whitebreasted Cormorants hunting in packs and catching plenty of fish. There were White backed Ducks sheltered in the western bay. The pair of African Fish Eagles were present and mobbed by a variety of bird species. The Night Heron roost areas were counted by Angus and Frances Hemp in their canoe, including all the Marina cannals.
    Survey notes


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    Observer NumberNameOptions

    Current data
    Ref #SpeciesCountBreeding
    Pairs    		Breeding
    indicator
    4Grebe, Great Crested
    (Podiceps cristatus)    		130
    6Grebe, Little
    (Tachybaptus ruficollis)    		390
    47Cormorant, White-breasted
    (Phalacrocorax lucidus)    		1460
    48Cormorant, Cape
    (Phalacrocorax capensis)    		60
    50Cormorant, Reed
    (Microcarbo africanus)    		460
    52Darter, African
    (Anhinga rufa)    		370
    54Heron, Grey
    (Ardea cinerea)    		30
    55Heron, Black-headed
    (Ardea melanocephala)    		10
    61Egret, Western Cattle
    (Bubulcus ibis)    		20
    69Night Heron, Black-crowned
    (Nycticorax nycticorax)    		40
    76Stork, Yellow-billed
    (Mycteria ibis)    		10
    81Ibis, African Sacred
    (Threskiornis aethiopicus)    		10
    84Ibis, Hadada
    (Bostrychia hagedash)    		40
    85Spoonbill, African
    (Platalea alba)    		40
    88Goose, Spur-winged
    (Plectropterus gambensis)    		30
    89Goose, Egyptian
    (Alopochen aegyptiaca)    		180Confirmed Breeding
    94Shoveler, Cape
    (Anas smithii)    		20
    96Duck, Yellow-billed
    (Anas undulata)    		190
    98Teal, Cape
    (Anas capensis)    		40
    104Duck, White-backed
    (Thalassornis leuconotus)    		150
    149Fish Eagle, African
    (Haliaeetus vocifer)    		20
    210Moorhen, Common
    (Gallinula chloropus)    		290
    212Coot, Red-knobbed
    (Fulica cristata)    		6160Confirmed Breeding
    245Lapwing, Blacksmith
    (Vanellus armatus)    		100
    269Avocet, Pied
    (Recurvirostra avosetta)    		10
    287Gull, Kelp
    (Larus dominicanus)    		1460
    289Gull, Hartlaub's
    (Chroicocephalus hartlaubii)    		260
    394Kingfisher, Pied
    (Ceryle rudis)    		50
    397Kingfisher, Malachite
    (Corythornis cristatus)    		20
    686Wagtail, Cape
    (Motacilla capensis)    		30
    1016, Mallard
    (Anas platyrhynchos)    		240
    10015Mallard, Hybrid
    (Anas hybrid)    		1040


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    Sunday 24 November 2024 01:05
    FitzPatrick Institute of African Ornithology
    Department of Biological Sciences - University of Cape Town

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