The Bald Eagle
In 1963, prior to being listed under the ESA, there were about 413 - 417 bald eagles in the wild. The species was listed in 1973 and within 34 years the number of animals in the wild population grew to 9,789 breeding pairs. Current Population Trend: Stable/Least Concern, but with increasing concern.
The Gray Wolf
Before being listed under the ESA, there were about a few hundred gray wolves in extreme northeast of Minnesota and a small number in Isle Royale, MI. The species was listed under the ESA in May 1974 and within 42 years the number of animals in the wild population grew to over 7,000. Current population trend: Stable/Least Concern.
The Grizzly Bear
Before being listed under the ESA, there were about 136 grizzly bears in the wild (about 2% of the species' former range south of Canada). The species was listed in July 28, 1975 and within 43 years the number of animals in the wild population grew to roughly 690 - 700. Current Population Trend: Stable/Least Concern.