Page 522 - Atlas Sea Birds Ver1

Table 1: Numbers of Grey-headed Gulls (pairs) breeding at coastal sites in southern Africa, 1865–2022: b) near Bredasdorp to Muzi
Pan. Subsites of Swartkops River and Lake St Lucia are shown in red.The Algoa Bay column sums values for the Swartkops, Coega and
Sundays river columns. ‘√’ signifies that breeding occurred at a site but numbers were not ascertained; ‘?’ that breeding may have taken
place

Year Near Bredasdorp De Hoop Vlei Algoa Bay Swartkops River valley Bar None Saltpans Chatty Saltpans Redhouse Saltpans Power Station pans Fishwater Flats Tippers Creek Coega River Saltworks Sundays River Saltworks Lake St Lucia Vincent Islands Lake Bhangazi South Lane Island Lane Island extension Bird Island North Island Selley's Lakes False Bay North Muzi Pan

1865
1925 1
1926 1
1927 7
1929 2
1932 100
1946
1949 58 58
1950 √ √
1951 0 √ √
1952 √ √ √
1953 √ √
1955 √ √
1957 √
1958 0 √ √
1959 2 3 100 100
1960 15 √ √
1961 23 √ √ √
1962 √ √
1963 16
1964 √ √
1966
1967 √ √ √
1968 100 100
1969 √ √
1970 2 2 √
1971 √ √
1972 750 750
1973 √ √
1974 √ √ √
1975 √ √ √
1976 0 √ √
1977 0 √ √
1978
1979 12 √ √ √ 200 200 √
1980 250 250
1981 0 √ √
1982 28 28 28
1983 2 2 0 0 2
1984 0 0 0 0 0 500 500
1985 3 3 0 0 3
1986 7 7 0 0 7
1987 0 0 0 0 0 410 400 10
1988 133 133 0 64 69 288 280 8
1989 0 0 0 0 0
1990 95 95 0 0 95 0
1991 2 2 0 0 2 100 √

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