Osprey Population

Osprey reproduction rates were dropping very rapidly in England. We suspected that the birds were consuming DDT and other chemicals, resulting in eggshells too thin to protect unborn chicks.
DDT with other chemicals is now banned in the U.S.A and Ospreys have bounced back since.


Northestern populations are growing at an annual rate of 10 to 15%, western populations are growing too, though more slowly.

The U.'s.A. now contains between 6,000 and 8,000 active ospreys nests.