英语翻译Homing pigeons are placed in training program from about

英语翻译
Homing pigeons are placed in training program from about the time they are 28 days of age.They are taught to enter the loft (阁楼) through a trap and to exercise above and around the loft,and gradually they are taken away for short distance in baskets and set free.They are then expected to find their home in the shortest possible time.In their training flights or in actual races,the birds are taken to prearranged (预先安排的) distant points and set free to find their way back to their own lofts.Once the birds are liberated,their owners,who are standing by at the home lofts,anxiously watch the sky for the return of their pigeons.Since time is of importance,the speed with which the birds enter the loft trap may make the difference between gaining a win or a second place.The head of a homing pigeon is comparatively small,but its brain is one quarter larger than that of the ordinary pigeon.The homing pigeon is very clever and will remember the landmarks.Some have been known to fly a hundred miles of course to avoid a storm.Some homing pigeon experts say that this bird is gifted with a form of built-in-radar that helps it find its own loft after hours of flight,for hidden under the head feathers are two very sharp ears,while the sharp eyes can see great distance in daytime.
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Why do homing pigeons fly home?They are not unique in this inherent (天生的) skill,it is found in most birds,in bees,ants,and even turtles,which have been known to travel hundreds of miles to return to their homes.But in the animal world,the homing pigeon alone can be trusted with its freedom and trained to carry out the missions (special tasks) that people demand.

家鸽们从28天大的时候开始就被放进训练计划.它们学习通过一个陷阱进入鸽房并在鸽房顶上或周围进行练习.最终,它们被放进篮子、带到一小段距离外并被释放,看它们能否在可能的最短时间内找到家.不管是在训练中或者是真实比赛中,这些鸟儿都被放置在预先安排的距离点上,并被放开去寻找回到鸽房的路.一旦鸟儿们被放开,它们的主人就站在鸽房边,焦急地望着天空,等待回归的鸽子.因为时间很重要,所以鸟儿们进入鸽房陷阱的速度可能决定是赢家还是第二名.
家鸽的头部相对较小,但它的大脑比普通鸽子大出四分之一.家鸽非常聪明而且能记住地标.总所周知一些家鸽为了避开风暴能飞翔一百英里.一些研究家鸽的专家指出这种鸟就生有一种“内部雷达”以帮助它飞行几个小时寻找它自己的鸽房；而藏在头部羽毛下的是两只非常敏锐的耳朵,同时有锐利的眼睛能在白天看得很远.
为什么家鸽能飞回家?他们在这种天生的技能上并不是独一无二的；这样的技能也在多数鸟类身上、在蜜蜂和蚂蚁的身上被发现；甚至乌龟也能游几百英里回家.但在动物世界,只有家鸽能获得信任被放飞并被训练执行人们要求的使命（特殊任务）.