The trumpeter swan, once plentiful in the state, had all but disappeared by the 1880s. In 1986 a program to reintroduce the bird to the state using eggs from Alaska was launched. The birds were hatched at the Milwaukee Zoo and released into the wild. In 2009, wildlife officials counted 183 trumpeter swan nests in the state.
The osprey population in the state was dramatically reduced due to the chemical pesticides in the bird’s food chain. But now there are nearly 500 nesting pairs of the bird in Wisconsin.

Osprey