Page 74 - Atlas Sea Birds Ver1

b Department of Forestry, Fisheries and Environment,
South Africa (unpubl.)
c Ministry of Fisheries and Marine Resources, Namibia
(unpubl.)
Kelp Gull
Year No. of pairs
1978 a 328
2020 b Minimum 23
a Crawford et al. (1982)
c Ministry of Fisheries and Marine Resources, Namibia
(unpubl.)

Hartlaub’s Gull
Year No. of pairs
Some of the guano platforms at Mile 4 Saltworks, 2007 (photo RJM
Crawford) 1970 a 1
Conservation status: Fully protected as a private nature 1977 a 2
reserve and saltworks (Simmons et al. 1998). 1978 a 75
Species breeding: Cape Cormorant, White-breasted 1985 a 42
Cormorant, Kelp Gull, Grey-headed Gull, Damara Tern,
Hartlaub’s Gull, Greater Crested (Swift) Tern, and Caspian 1986 a √
Tern a
Numbers breeding: Williams et al. (1990)
Cape Cormorant Note: Hartlaub’s Gulls no longer breed at Mile 4 Saltworks
(M Boorman in litt.).
Year No. of pairs
1978 a 43542 Grey-headed Gull
1988 b 53420 Year No. of pairs
1992 b 50871 1978 a 2
1993 b 55927 a Brooke et al. (1982)
1996 b 32041 Greater Crested Tern
1997 b 31920 Year No. of pairs
1998 b 56208 1986 a 10+
2002 b 6250 a Williams (1987)
2003 b 27649 Note: Greater Crested Terns no longer breed at Mile 4
Saltworks (M Boorman in litt.).
2004 b 12173
2005 b 30011 Caspian Tern
Year No. of pairs
2014 c 5863
1975 a 35
2018 c 8964
1976 a 18+
2020 c 23575
1980/81 b c. 40
a Cooper at al. (1982) 1989/90 b 1
b Crawford et al. (2007)
c Ministry of Fisheries and Marine Resources, Namibia 2019 c 51
(unpubl.) 2020 c 1-2
2021 c 1-2
White-breasted Cormorant
a Clinning (1978)
Year No. of pairs b Cooper et al. (1990)
1978 a 115 c M Boorman (unpubl.)
Notes: In recent years one or two pairs of Caspian Tern
1987 b 30
attempted to breed every year but the eggs/chicks were
2018 c 28 predated. In 2019, 51 pairs established nests simultaneously
and laid eggs. However, the whole breeding attempt was
2020 c 104

a Brooke et al. (1982)
68