Distribution of Sooty Shearwater ( Puffinus griseus ) breeding colonies along the Otago Coast, New Zealand, with indication of countrywide population trends | Notornis and Birds New Zealand

Notornis

Moller, H¹  Hamilton, SA¹  Robertson, CJR¹ 

关键词: distribution;    islands;    population abundance;    Puffinus griseus;    Sooty Shearwater;   

DOI  :  

学科分类：动物科学

来源: Ornithological Society of New Zealand Inc.

【 摘 要 】

Large breeding colonies of Sooty Shearwaters or Titi (Puffinus griseus) occur on offshore islands around New Zealand and several smaller colonies occur on headlands and near-shore islands around southern New Zealand; their population trends are unknown. Twelve mainland colonies around Otago had between 11 and 620 burrows in the 1992/93 breeding season. The largest of three near-shore island colonies in Otago had at least 1,050 burrows. Sooty Shearwater burrows have been recorded from 39 mainland sites in the South Island, but only 11 (28%) of these have been checked in the last 40 years: many may now be extinct. OSNZ Beach Patrol data suggest that the overall number of Sooty Shearwaters has changed little over a 26 year period. Methods for monitoring Sooty Shearwater colonies need to be standardised to evaluate population trends in the future.

【 授权许可】

Unknown