thumbnail

Post-fledging brood and care division in the roseate tern (Sterna dougallii)

Journal of Ethology

By:
, ,
DOI: 10.1007/s10164-011-0286-9

Links

Abstract

Extended post-fledging parental care is an important aspect of parental care in birds, although little studied due to logistic difficulties. Commonly, the brood is split physically (brood division) and/or preferential care is given to a subset of the brood by one parent or the other (care division). Among gulls and tern (Laridae), males and females generally share parental activities during the pre-fledging period, but the allocation of parental care after fledging is little documented. This study examined the behaviour of male and female roseate terns (Sterna dougallii) during the late chick-rearing and early post-fledging periods, and in particular the amount of feeds and the time spent in attendance given to individual chicks/fledglings. Pre-fledging parental care was biparental in all cases. Post-fledging parental care was dependent on the number of fledglings in the brood. Males and females continued biparental care in clutches with one surviving fledgling, while in two-fledgling clutches, males fed the A-fledgling while females fed the B-fledgling. Overall, there was no difference in attendance, only in feeds. This division of care may be influenced by the male only being certain of the paternity of the A-chick but not by chick sex. ?? 2011 Japan Ethological Society and Springer.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Post-fledging brood and care division in the roseate tern (Sterna dougallii)
Series title:
Journal of Ethology
DOI:
10.1007/s10164-011-0286-9
Volume
30
Issue:
1
Year Published:
2012
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
29
Last page:
34
Number of Pages:
6