最引人注目的就是秃头鹰了，

The most spectacular by far is that of the bald eagle,

北美秃头鹰的数量一度很多，但在近四十年中全北美的秃头鹰数量急剧下降。

Though once quite large, the population of the bald eagle across North America has drastically declined in the past forty years.

摄影秃头鹰,是一个挑战,捕捉影片或数字传感器.

Photographically bald eagles are a challenge to capture on film or digital sensors.

保护天然鱼类种群和食物来源的秃头鹰，鱼鹰和水獭等。

Protect the natural fish populations and food sources for bald eagles, ospreys and otters among others.