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    Zandvlei: Upper Estuary (34061828)

    Western Cape
    Card 503958
    Compiler 10691
    Location code 34061828Zandvlei: Upper Estuary (Western Cape)
    Start date 2012-07-21
    Season WWinter
    Start time 08:30
    End time 10:15
    Shoreline covered 95
    Openwater covered 95
    Total Species 19
    Total Count 142
    Wetland Condition 1Full (High tide for estuaries)
    Wetland Threats
    Count Condition 1Bad
    Count Type 1On foot
    Nil Count (No birds present) 0There were CWAC species present
    Notes The day time, high was forecast to  be 14 degrees C. It was raining almost continuously with gusting wind at times gale force on the beaufort scale at the yacht club. The waves were more than 1/2 metre high in the vlei and breaking onto the shore of the caravan park with spray 2 metres into the air. Cloud cover 100%. The Marina da Gama channels were not counted nor was the Zandvlei Reserve channels where the Night Herons roost, can only be done by canoe. The inflow of the Westlake and Keysers Rivers was turbid and muddy in colour with little visibility in the water. The level of the Westlake River was visibly higher than the Keysers River at the confluence, at the railway bridge. While counting on the western shore, a Crested Grebe and a Reed Cormorant were seen eating fish close to the shoreline. The estuary mouth was open with a good outflow to the sea. More than 2 metres of the concrete wall on the western side of the mouth was exposed and above the outflowing water level.  The water level in the vlei was about 30cm above the rubble weir south of the Royal Road bridge.
    Survey notes


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    Observer NumberNameOptions

    Current data
    Ref #SpeciesCountBreeding
    Pairs    		Breeding
    indicator
    4Grebe, Great Crested
    (Podiceps cristatus)    		30
    6Grebe, Little
    (Tachybaptus ruficollis)    		50
    47Cormorant, White-breasted
    (Phalacrocorax lucidus)    		20
    50Cormorant, Reed
    (Microcarbo africanus)    		60
    52Darter, African
    (Anhinga rufa)    		20
    55Heron, Black-headed
    (Ardea melanocephala)    		10
    81Ibis, African Sacred
    (Threskiornis aethiopicus)    		10
    84Ibis, Hadada
    (Bostrychia hagedash)    		90
    88Goose, Spur-winged
    (Plectropterus gambensis)    		10
    89Goose, Egyptian
    (Alopochen aegyptiaca)    		80
    96Duck, Yellow-billed
    (Anas undulata)    		50
    104Duck, White-backed
    (Thalassornis leuconotus)    		70
    210Moorhen, Common
    (Gallinula chloropus)    		10
    212Coot, Red-knobbed
    (Fulica cristata)    		650
    245Lapwing, Blacksmith
    (Vanellus armatus)    		40
    287Gull, Kelp
    (Larus dominicanus)    		50
    289Gull, Hartlaub's
    (Chroicocephalus hartlaubii)    		50
    1016, Mallard
    (Anas platyrhynchos)    		50
    10015Mallard, Hybrid
    (Anas hybrid)    		70


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    Thursday 21 November 2024 07:15
    FitzPatrick Institute of African Ornithology
    Department of Biological Sciences - University of Cape Town

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