Breeding of variable oystercatchers (Haematopus unicolor) at Kaikoura Peninsula, South Island, New Zealand | Notornis and Birds New Zealand

Notornis

Rowe, L¹ 

关键词: breeding success;    clutch size;    egg size;    Haematopus unicolor;    Kaikoura Peninsula;    variable oystercatcher;   

DOI  :  

学科分类：动物科学

来源: Ornithological Society of New Zealand Inc.

【 摘 要 】

The nesting of variable oystercatchers (Haematopus unicolor) on the Kaikoura Peninsula was studied at 6 sites over 8 years. Only in 1 year were birds known to have laid eggs at all 6 sites and only at 2 sites was nesting observed every year. Loss of nests often resulted in re-nesting and at 1 site birds made 4 attempts in 1 season. Over the 8 years, 117 eggs were found in 53 nesting attempts between mid-Oct and late Jan. The average size of 114 eggs was 58.2 x 40.6 mm. Thirty of 53 nesting attempts were completed and averaged 2.4 eggs/clutch (range 1

【 授权许可】

Unknown