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Nesting Ecology of Alcippe morrisonia at Fushan Experimental Forest
|Authors:||Huang - Che Hsu|
Alcippe morrisonia,nest,microhabitat,reproductive success,nest temperature,
|Publication Year :||2003|
In order to understand the nesting ecology of Alcippe morrisonia at Fushan Experiment Forest, Taiwan, the morphology and composition of bird nests, characters of nest site, nest tree characters, and nest external and internal temperatures were described and measured. All these characters were further discussed in terms of reproductive success. I conducted this study from late February till early August in 2002 and 2003, respectively. Seventy one new nests were discovered during intensive search. The major breeding season started from March to May, and peaked during the first half of April. The nest was an open cup and the layers from exterior to interior were named as attachment, out layer and structure layer. The lining layer was not obvious. The material used for nests was very complex and comprised mainly of moss, leaf, rootlet and fungi. The selection of nest tree species was not specific. We could find nests on herbs, shrubs and trees, but the Rhododendron L. and Oreocnide pedunculata (Shirai) Masamune were the most common nest tree species. Out of 71 nests, 41 nests were recorded with eggs or nestling. Among them, 19 succeed and 22 failed to fledge. The primary cause of nest failure was nest predation, and the second cause was the inclement weather. Features of nest site and microhabitat do not have significant influence on nest fate, neither do the concealment of nest, the potential nest site in microhabitat and the distance to human activity. According to the monitored temperatures inside and outside of two nests, I found that the nest temperature was more stable than air temperature and the key factor for raising temperature was parent’s company inside nest. The bird nest could play a role of temperature insulation and slow down the falling speed of temperature when parents left nests.
|Appears in Collections:||生態學與演化生物學研究所|
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