INTRODUCTION
In 1980, the United States Fish and Wildlife Service (USFWS) and the Institute for Wildlife Studies (IWS) initiated a program to reintroduce bald eagles to Santa Catalina Island, California.
Between 1980 and 1986, 33 eagles were released on the island from three different "hacking" platforms. While many of these birds matured and breeding pairs were established on the island, reproduction was not successful ... due to DDE levels ... these had been found to be inversely correlated with eggshell thickness.
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