首页   按字顺浏览 期刊浏览 卷期浏览 Individual differences in bait‐fishing by the Green‐backed HeronArdeola striataassociat...
Individual differences in bait‐fishing by the Green‐backed HeronArdeola striataassociated with territory quality

 

作者: HIROYOSHI HIGUCHI,  

 

期刊: Ibis  (WILEY Available online 1988)
卷期: Volume 130, issue 1  

页码: 39-44

 

ISSN:0019-1019

 

年代: 1988

 

DOI:10.1111/j.1474-919X.1988.tb00953.x

 

出版商: Blackwell Publishing Ltd

 

数据来源: WILEY

 

摘要:

Individual differences were found in the feeding sites, frequency of bait fishing, and fishing success in three individual Green‐backed Herons in southern Japan. The differences in the use of bait fishing and in fishing success seemed to be related primarily to differences in feeding sites, which were associated with territory quality. Bait fishing was used most frequently by the individual which fished often in open water with fewer suitable rocks, where the heron has to overcome the handicap of being easily seen by fish. Bait fishing was least common in the individual which fished most often from high branches. The leaves and twigs dropped from high branches rarely reached the spot the heron intended, and the fishing success was low. Individuals probably also differed in their skill at bait fishin

 

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