But he's not alone. 但它并不孤单

122. And the most acute competition comes from one's own kind.
     最激烈的竞争来自同类
123. A male terror bird.
     一只雄性骇鸟
124. His territory is the lakeshore.
     湖岸是它的领地
125. But he's not alone.
     但它并不孤单
126. A younger male wants this prime spot.
     一只年轻的雄性也想要这个绝佳位置
127. The older one can't ignore the threat.
     年长的骇鸟不能无视威胁
128. The youngster refuses to back down.
     年轻的骇鸟拒绝退让

来自《我们星球上的生命 第一季 第一集 Life on Our Planet S01E01 生命法则》第 125 行