The eastern bluebird is listed as a species of special concern by the State of New York. Eastern bluebirds were most often observed within and adjacent to the particle accelerator ring in the vicinity of the ecology fields in pairs or in small flocks of four to six birds. Successful reproduction by bluebirds was not documented on the site in 1994. One nest box is located by the ecology fields and two within the particle accelerator ring. Additional nest boxes for the eastern bluebird will be installed in 2000 as part of habitat enhancement initiatives outlined in the Wildlife Management Plan .
Ospreys feed almost exclusively on live fish and typically remain near water.
Reproductive failures of osprey in the 1950s and 1960s were caused by eggshell thinning and breakage linked to DDT exposure. Osprey productivity throughout the Boston-New York region and elsewhere reached very low levels. In many places, including Long Island, the population is recovering. The osprey was initially listed as a federally endangered species in 1978, but its status was changed to threatened in 1983 as the population began to recover. The osprey is no longer on the U.S. Fish and Wildlife Service's list of threatened and endangered species, but continues to be listed as threatened by the State of New York.