【摘要】：雀形目，燕雀科体长：15～17厘米；体重：28～48克一种广泛分布于全世界的鸟类，有许多亚种，在都江堰生活的是青藏亚种。红交嘴雀只吃种仁，算得上是个美食家。如果那年松杉结果多，红交嘴雀会产5～6枚卵，如果欠收就只产2～3枚卵，甚至不产卵。Loxia curvirostra is a widely distributed species with light-colored plumage and small build.It occurs and nests in pine trees and cedars at an altitude of 3 to 4.5 kilometers,laying a clutch of 2 to 6 eggs each time.Loxia curvirostra is characterized by the mandible crossing at the tip,which gives rise to its English name as crossbill and helps with husking pine nuts.
雀形目，燕雀科
体长：15～17厘米；体重：28～48克
一种广泛分布于全世界的鸟类，有许多亚种，在都江堰生活的是青藏亚种。其体色暗，个头也小。夏天它们在海拔3 000～4 500米地区的松杉上活动，将落叶松、冷杉的球果啄开，踩在球果上取食。红交嘴雀只吃种仁，算得上是个美食家。上下错开的嘴，是剥食各种松子的专用工具，可以灵巧夹开种壳。它们的巢筑在高大松、杉的侧枝上。如果那年松杉结果多，红交嘴雀会产5～6枚卵，如果欠收就只产2～3枚卵，甚至不产卵。刚孵出的小鸟，嘴是正常的，等离巢需要自己取食时，嘴部上下就交错开了。(www.xing528.com)
Loxia curvirostra is a widely distributed species with light-colored plumage and small build.It occurs and nests in pine trees and cedars at an altitude of 3 to 4.5 kilometers,laying a clutch of 2 to 6 eggs each time.Loxia curvirostra is characterized by the mandible crossing at the tip,which gives rise to its English name as crossbill and helps with husking pine nuts.
免责声明：以上内容源自网络，版权归原作者所有，如有侵犯您的原创版权请告知，我们将尽快删除相关内容。
