Alternatively, small mammals such as mice and ground squirrels are important in the diet of many waterfowl-nest predators and can themselves be important predators of songbird nets.

另外，小型哺乳动物，如老鼠和地松鼠是许多水禽捕食者的重要食物，它们自己也可能是鸣禽网的重要捕食者。