If you put a buzzard in a pen six to eight feet square and entirely open at the top, the bird, in spite of its ability to fly, will be an absolute prisoner. The reason is that a buzzard always begins a flight from the ground with a run of ten to twelve feet. Without space to run, as is its habit, it will not even attempt to fly, but remain a prisoner for life in a small jail with no top.
如果把一只禿鷲放在一個6~8平方英尺的無頂圍欄里,這只大鳥盡管會飛,也絕對會成為這欄中之囚。原因是禿鷲從地面起飛前總要先助跑10~12英尺的距離。這是它的習慣,如果沒有了足夠的助跑空間,它甚至不會嘗試去飛,只會終身困囿于一個無頂?shù)男∏艋\中。