Human caused mortality of young golden eagle. Photographers placed a blind directly in front of eyrie and the adults would not enter the eyrie to feed the young.

Human Caused Mortality

As we become more aware and sensitive to our environment, direct deaths from human mortality decreases. Most human mortality is caused by environmental contamination and habitat destruction. We almost lost the peregrine in continental US due to DDT poisoning. Although we have banned the use of DDT in the United States, the peregrine migrates to Mexico ,Central and South America where levels are still high. As an apex species in our food chain, feeding almost entirely on birds, the peregrine is one of the most important species that serve as indicators of our environmental health. Most known mortality during our 16 year study period was caused by peregrines colliding with motorized vehicles.

West Nile Virus and other avian diseases may ultimately pose the greatest threat to the peregrine falcon. Continued monitoring for diseases is necessary to insure the health of our wild populations.

Avian predators are shown on the following pages.