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Behaviour and affinities of the Magellanic Cormorant

Notornis, 33 (4), 249-257

Siegel-Causey, D. (1986)

Article Type: Paper

The pair-bonding, recognition, defence, and courtship behaviour of the Magellanic Cormorant (Phalacrocorax magellanicus) is described. Its displays indicate that its closest relatives are the Pelagic and Red-faced Cormorants of the North Pacific, and that its similarities to the Guanay (P. bougainvillii) are only superficial. The affinities of the Magellanic Cormorant appear to lie with the cliff shags as a member of the Stictocarbo complex, rather than with the blue-eyed shag (Leucocarbo) complex.








South Polar Skua breeding colonies in the Ross Sea region, Antarctica

Notornis, 33 (3), 155-163

Ainley, D.G., Morrell, S.H., Wood, R.C. (1986)

Article Type: Paper

Using ground and aerial surveys between 1980 and 1983, we increased the number of known breeding sites of the South Polar Skua in the Ross Sea region from 21 to 55. Some 20 more sites may occur along parts of the coast which we did not survey, especially between Cape Adare and Cape Jones. We estimate that the Ross Sea region has about 15000 skuas. Up to 20% of breeders do not nest in association with penguins. Since the late 1950s, several colonies have increased, while others have decreased. Some colony changes have apparently been due to human activity. Information on banded birds indicates a low rate of exchange between colonies; some movement may be related to more food being available at refuse dumps at scientific bases.