一般影響
家麻雀(Passer domesticus)體型雖小，但是相當具有攻擊性。家麻雀已知會經由競爭外食物資源而取代本地物種。在農村地區，他們可能將本土鳥類逐出巢外，這些被家麻雀趕走的鳥種包括藍鳥、卡羅來納鷦鷯、多種啄木鳥和毛腳燕。
早在其入侵北美，就被認為是一個嚴重的農業害蟲，因為他們食用成熟穀物，如小麥、燕麥、玉米、大麥和高粱，以及豌豆、蘿蔔、白菜、幾乎所有的蔬菜幼苗、蘋果、櫻桃、葡萄、桃子、李子、梨、草莓和覆盆子。此外，家麻雀也是家禽養殖場的有害生物，因為他們消耗大量的雞飼料。
地點特有的影響：Bermuda 
競爭: Passer domesticus compete with native bluebirds (Sialia sialis) for nest sites (Dobson, 2003 in Varnham, 2006). United States (USA)
競爭: Passer domesticus may evict native birds from their nests and outcompete them for trophic resources (Aguirre and Poss, 2000). Species reported as driven away by P. domesticus include the bluebird and the Carolina wren, as well as a variety of woodpeckers and martins.
農業: According to Aguirre and Poss (2000), early in its invasion of North America, P. domesticus began attacking ripening grains on farmland and was considered a serious agricultural pest. Additionally, P. domesticus is a pest on poultry farms where they can consume fairly large quantities of chicken feed.
|
