碩士 / 國立臺南大學 / 環境生態研究所碩士班 / 98 / I studied the structure and foraging ecology of mixed-bird-species flocks (MSFs) during a non-breeding season in a mid-elevation forest (approximately 1600 m a.s.l.) in Mt. Hisnanshan, southern Taiwan, from November 2008 to March 2009. I recorded 19 species participating in the MSFs. An MSF averaged 2.7 species and 17.9 individuals, and was constructed from particular species. There were no significantly relations between the number of species and individuals in an MSF. Rufous-faced Warbler Abroscopus albogularis, Grey-cheeked Fulvetta Alcippe morrisonia, Taiwan Yuhina Yuhina brunneiceps and Black-throated Tit Aegithalos concinnus were the nuclear species in the MSFs. According to the species composition of an MSF, birds can be classified into 3 categories: tree insectivores, aerial insectivores, and frugivores, and closely related to body mass and diet of the birds. Birds in an MSF tended to forage above bush layer and tree edges. The foraging height, location, and methods of a bird were roughly same, regardless of whether the bird was in an MSF or not. Moreover, the foraging niches of the tree insectivores mostly overlapped each other. Because the members of an MSF frequently belonged to unique foraging guild, it denote that birds participate in an MSF were due to improved feeding efficiency rather than reduced risk of predation. However, the details of the formation mechanisms of MSFs need to be studied in the future.
| Identifer | oai:union.ndltd.org:TW/098NTNT5587007 |
| Creators | Yi-jung Chang, 張義榮 |
| Contributors | Hau-jie Shiu, 許皓捷 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 33 |
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