问号粉碎机问号粉碎机:春暖花开,燕子归来。候鸟是依靠什么迁徙千里而不迷路的呢?要说起候鸟不远万里的迁徙本领,真的是令人惊叹。极燕鸥要完成从北极到南极的约17000千米的飞行,中间有很大距离是茫茫的大洋。又如从阿拉斯加向夏威夷群岛迁徙的鹬类,在海洋上空要飞行3000千米以上的路程。还有一种类似鹬类的小鸟,它们在日本营巢,而在澳洲东部越冬,在大洋上空要飞行5000千米,并且有很 Question mark grinder Question mark grinder: spring, swallows return. Migratory birds are relying on a few miles away without getting lost? Talking about the migratory ability of migratory birds miles away, it is really amazing. Terns to complete about 17,000 km from the North Pole to the Antarctic flight, the middle of a great distance is the vast ocean. Another example is the shorebirds that migrate to the Hawaiian Islands from Alaska flying more than 3,000 kilometers above the ocean. There are also a couple of shorebirds that nest in Japan and wintering in eastern Australia, flying 5,000 kilometers over the ocean and having a