英语分级阅读 · Level 1 · nature · 约 77 词
Small Birds Travel Very Long Distances
Some small birds fly thousands of kilometers between seasons to find food and safe places.
Some small birds take long trips every year. In cold months, food is hard to find. So the birds fly to warmer places. They rest and eat along the way. Then, when spring comes, they fly back. The trip can be thousands of kilometers. Birds use the sun, stars, and land marks to stay on the path. Scientists put light rings on birds to study these trips. People can help by keeping parks and clean water ready.
中文参考
有些小鸟每年要走很长的路。冷的月份食物难找，所以它们飞向更暖的地方，沿途休息和进食。春天来了再飞回去。行程可能长达数千公里。鸟类用太阳、星星和地面标志保持路线。科学家给鸟戴轻环来研究这些旅程。人们可以保护公园和清洁水源来帮助它们。