At night fowls go to roost. They do not lie down, but perch on a board or a branch.

晚上, 鸡就回到鸡窝（roost）里去了, 鸡睡觉的时候并不躺下, 而是栖息在板子或者树枝上。

About sundown saw a flock of dun grayish sparrows going to roost in crevices of a crag above the big snow-field. Charming little mountaineers! Found a species of sedge in flower within eight or ten feet of a snow-bank.

大约在日落时分，看到一群暗灰色的麻雀正在大雪原上方的峭壁缝隙中栖息。迷人的小登山家！在距雪堤八或十英尺的范围内发现一种正在开花的莎草。