Page 107 - Atlas Sea Birds Ver1

Estimated numbers (pairs) of different seabirds breeding at Possession Island, 1828–2021

Cape
Cape
Crowned
African
Bank
Crested
Year Penguin Gannet Cormorant Cormorant Cormorant Kelp Hartlaub's Greater Caspian Damara
Tern
Tern
Gull
Gull
Tern
1828 √ 0
1885 √
1956 23245 19258 0
1962 √
1967 9081 16300
1977 209 95 29 23
1978 2568 4357 83 157 280 274 4
1979 300 1
1980 3260 100 20 62
1981 4100 1400 200
1982 2970 13 30
1983 3540
1984 2380
1985 638 3530 6431 53 217 556
1986 327 286 44 157 77 100
1987 454 2740 5006 53 64 365 912 800
1988 946 3100 5592 47 161 888 299
1989 3040 550 1476
1990 702
1991 29
1992 669 3160 2732
1993 751 1400 47
1994 506 920
1995 608 770 2852 2 28 1432
1996 498 730 20 187
1997 512 234
1998 465 340 22 281
1999 477 11 163
2000 359 16 327
2001 362 400 4502 10 136 1422 75
2002 406 5 138
2003 372 437 5632 2 115
2004 445 480 2119 6 176
2005 470 351 2440 3 176
2006 356 360 250 2 101 1494 124 2
2007 459 1298 2 106 55 2
2008 474 1639 0 101
2009 616 1777 0 206
2010 594 380 1801 0 149
2011 523 350 1451 0 271 1
2012 618 0 11 129 1
2013 726 435 18 195 1
2014 858 240 1949 5 305 2
2015 1205 524 1 100 2
2016 990 1684 0 264 2
2017 944 1450 0 244 3
2018 √ 126 810 11 130 4
2019 √ 0 151 2
2020 30 2
2021 30 2

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