Movements and activities of male black-tailed gulls in breeding and sabbatical years

Kentaro Kazama, Kazuhiko Hirata, Takashi Yamamoto, Hiroshi Hashimoto, Akinori Takahashi, Yasuaki Niizuma, Philip N. Trathan, Yutaka Watanuki

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Long-lived animals sometimes skip one or more breeding seasons; however, little is known about their movements and activities during such 'sabbatical' periods. Here we present novel data on year-round movements and activities of two male black-tailed gulls Larus crassirostris during a sabbatical year. We compare the data with those in a year when they bred and with those of two other breeding males. The year-round migration routes of two sabbatical males were consistent with those of the breeding males: they returned to the breeding area but did not visit the colony in the sabbatical year. They landed more frequently on water (a potential index of foraging effort) during the non-breeding autumn and winter prior to the sabbatical year than before breeding. Sabbatical gulls may forage more intensively to recover body condition immediately after breeding.

Original languageEnglish
Pages (from-to)603-608
Number of pages6
JournalJournal of Avian Biology
Volume44
Issue number6
DOIs
Publication statusPublished - 2013 Nov 1
Externally publishedYes

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ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Cite this

Kazama, K., Hirata, K., Yamamoto, T., Hashimoto, H., Takahashi, A., Niizuma, Y., Trathan, P. N., & Watanuki, Y. (2013). Movements and activities of male black-tailed gulls in breeding and sabbatical years. Journal of Avian Biology, 44(6), 603-608. https://doi.org/10.1111/j.1600-048X.2013.00103.x