本研究收集宜蘭地區度冬遊隼（Falco peregrinus）的食餘與當地鳥類調查資料，檢 視食餘中的獵物種類，以瞭解遊隼食性與其偏好的獵物類型。自2010 年11 月至2011 年5 月，共在宜蘭6 處地區的電塔發現遊隼蹤跡，調查範圍內至少有7 隻遊隼在此活 動。在遊隼停棲的電塔下採集了食餘，鑑定分析出至少436 隻個體，以鳥類為主要獵 物。包括鳥類20 科387 隻、兩棲類2 科2 隻、爬蟲類3 科4 隻、哺乳類2 目6 隻、昆 蟲1 科1 隻、魚類1 目9 隻、其他不確定類群獵物27 隻；遊隼停棲點週邊的鳥類調查 則紀錄到34 科83 種鳥類共12,541 隻次。比較鳥類調查與食餘分析資料，發現遊隼顯 著偏好獵捕鴿子（Columba livia），在12 月至次年4 月期間鴿子在食餘中的比例都顯著 高於環境中鴿子的比例，但5 月份遊隼則對獵捕鴿子無顯著偏好。除了美福樣區外， 另5 個樣區的遊隼均偏好獵捕鴿子，而次要獵物的種類可能與周圍環境的物種有關。

This study aims to understand the prey preference of wintering Peregrine Falcons (Falco peregrinus) in Yilan county, Taiwan. From November 2010 to May 2011, we collected food remains of the falcons from their perching sites; we also conducted avifauna survey from each perching site. Falcons from six sites were found roosting on electricity pylons, and at least seven individuals were identified wintering in the study area. From these prey remains, we identified 436 prey individuals which contained 387 birds from 20 families, two amphibians from two families, four reptiles from three families, six mammals from two orders, one insect and nine fish from one order, and 27 unidentified food remains. The avifauna surveys identified 83 species, 12,541 birds. By comparing the prey items and bird survey data, the Peregrine Falcon showed significant preference on pigeons (Columba livia). Monthly prey preference for pigeons was significant from December to April but insignificant in May. The Peregrine Falcon of five sites showed significant preference for pigeons, except the falcon at May-fu site. When excluding pigeons, prey preference showed differences among sites, tending to hunt for abundant prey species.