The Service determines the Puerto Rican broad-winged hawk (Buteo platypterus brunnescens) and the Puerto Rican sharp-shinned hawk (Accipiter striatus venator) to be endangered pursuant to the Endangered Species Act (Act) of 1973, as amended. These uncommon woodland raptors are restricted to montane, primarily government-owned forests along the Cordillera Central, Sierra de Cayey and Sierra de Luquillo. There are approximately 155 sharp-shinned hawks and 124 broad-winged hawks island-wide. Both species are currently threatened by timber harvest and management practices in the forests; road construction in relation to timbering and recreational activities; increase in numbers of recreational facilities, and the disturbance associated with public use; mortality and habitat destruction from hurricanes; the lack of comprehensive management plans for the Commonwealth forests; and possible loss of genetic variation due to low population levels. The Puerto Rican sharp-shinned hawk is also affected by warble fly parasitism. This final rule will implement the Federal protection and recovery provisions afforded by the Act for the Puerto Rican broad-winged hawk and the Puerto Rican sharp-shinned hawk.
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