It's called the cock of the rock.

它叫做石鸡。

He could take a ptarmigan from its nest, kill a rabbit as it slept, and snap in mid air the little chipmunks fleeing a second too late for the trees.

可以把石鸡从窝里捉出来, 把睡觉的野兔杀死, 鼠跑慢一步都在逃上大树之半空中咬住。

Studies of living birds, like chukar partridges, have shown that birds can get a better grip on inclined surfaces, like tree trunks and rocks, when they flap their wings as they run.

对活鸟的研究， 比如石鸡，表明鸟类在奔跑时拍打翅膀可以更好地抓住倾斜的表面，如树干和岩石。