John J. Craighead, Date of Birth, Place of Birth, Date of Death

John J. Craighead

American conservationist

Date of Birth: 14-Aug-1916

Place of Birth: Washington, D.C., District of Columbia, United States

Date of Death: 18-Sep-2016

Profession: naturalist, conservationist

Nationality: United States

Zodiac Sign: Leo

Frank Cooper Craighead Jr.
(August 14, 1916 – October 21, 2001) and John Johnson Craighead (August 14, 1916 – September 18, 2016), twin brothers, were American conservationists, naturalists, and researchers who made important contributions to the study of falconry and grizzly bear biology.
Born in Washington, D.C.
where both graduated from Western High School in 1935, the brothers began collecting and identifying animals and plants they found alongside the Potomac, and soon expanded their interests to birds and hawks, going west in 1934 to begin studying falconry.
After the war, during which they were employed as survival trainers, they each married and resumed their work in falconry.
During the 1950s they expanded their work to other animals, including many species living in and around Yellowstone, and eventually separated.In 1959 their careers merged again, this time to begin a 12-year study of grizzly bears in Yellowstone, as the animals were considered threatened by increased human activity; however a 1971 disagreement with the National Park Service ended their Yellowstone studies; however it continued elsewhere in Montana, including the Scapegoat Wilderness.
After 1976 their work was mostly confined to field guides and educating the public about environmentalism; however, field ecology continued until Frank's death in 2001 from Parkinson's disease. In 1998, the National Audubon Society named the brothers among the top 100 conservationists of the 20th century.