level of nesting

例句：

1. 1. Birds nest in trees to protect their eggs from predators.
   鸟在树上筑巢以保护它们的蛋免受捕食者的伤害。
2. 2.The owl is known for its ability to hunt and nest in the dark.
   猫头鹰以其在黑暗中狩猎和筑巢的能力而闻名。
3. 3. Many animals nest during the winter months when food is scarce.
   许多动物在食物稀缺的冬季筑巢。