The bay is also home to a large population of bald eagles.
The region is noted for its population of bald eagles.
But relative to the total population of eagles, the losses thus far have been modest.
Spesutie Island is home to a large population of bald eagles.
With the purchase, the state concluded a 15-year program to restore its bald eagle population.
There are also populations of white-tailed eagles at the reservoir.
Additionally, power lines cause a frequent electrocution, which results in death for the majority of the eagle population.
The bald eagle population has rejuvenated since the 1970's; there are 3,980 in Illinois, according to a recent count.
For decades the country's bald eagle population teetered on the edge of extinction.
Over time, pollution and habitat destruction caused a decline in the bald eagle population.