Sunday, August 15, 2010

Concern about increasing numbers of Black backed gulls

I am concerned about the increasing numbers of black-backed gulls and the impact that they are having on a wide range of native birds through direct predation, disturbance and klepto-parasitism.
Photogarph shows attempted klepto-parasitism of a adult Caspian tern by a juvenile Black-backed gull at Avon-Heathcote estuary - august 2010

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