1影响候鸟迁徙的非生物因素主要是什么？有人说，北风吹，雁南飞是生物的适应性，但这种适应性是雁长期对气候改变的刺激飞向温暖的南方形成的生活习性。显然这种观点与人们根据经验确认相一致：影响候鸟迁徙的的非生物因素是温度。加拿大洛文教授在1924年秋，网罗了一些鸦类， 1 What are the main non-biological factors that affect migrating birds? Some people say that the north wind is blowing, and the south of the geese is the adaptability of the organism, but this adaptability is the habit of the geese long-term to stimulate the climate change to fly to the warm south. Obviously this view is consistent with people’s confirmation based on experience: The abiotic factor that influences migratory birds is temperature. In the fall of 1924, Professor Lovin of Canada recruited some crows.