| 中文摘要 |
東方草鴞（Tyto longimembris Jerdon 1893）在台灣地區為稀有的留鳥，主要分布在台灣西南部低海拔地區。2003-2005年問在高雄縣旗山鎮中寮山地區記錄到3個草鴞所使用的繁殖巢區。巢位出入口由植株高度較低（60-80cm）的白茅（Imperata cylindrica）所組成，通道高度約為30cm，後方連接較高大（2-3m）之甜根子草（Saccharum spontaneum）、五節芒（Miscanthus floridulus）等禾本科植物所組成的巢室，面積約為180cm×130cm。每窩幼雛數為2-4隻（n=3）。從巢區所拾獲的43顆食繭（2003-2004年）分析結果，旗山地區東方草鴞育雛期間的獵物組成以小型獸類為主，可辨識的種類及數量共計有6種77隻，包括鬼鼠（Bandicota indica）26隻、月鼠（Mus caroli）25隻、小黃腹鼠（Rattus losea）17隻、赤背條鼠（Apodemus agrarius）4隻和白齒鼩（Crocidura spp.）4隻，鳥類有1種1隻紅鳩（Streptopelia tranquebarica），另外在巢區曾發現台灣野兔（Lepus sinesis formousus）幼體殘骸。
The eastern grass owl (Tyto to longimembris Jerdon 1839) is a rare species of the birds belonging to the family Tytonidae in Taiwan It is scatteringly found in the low-land areas of the south-western Taiwan , and its biology and feeding ecology have been little investigated We found three nests of this owl in the Chung-liao-san area of Kaohsiung in 2003 to 2005 They were built on the ground and covered by dense tall grasses with a tunnel-like entrance made of short grasses The brood sizes were 2 to 4. We collected and examined 43 owl pellets from the nests, and identified 77 prey items in the pellets. They were 26 items of Bandicota indica, 25 of Mus caroli, 17 of Rattus losea, 4 of Apodemus agrarius, 4 of Crocidura spp. and 1 of Streptopelia tranquebarica. Also, partial remains of the Formosan hare (Lepus sinesis formosus) were found near one of the nests. |
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