Background
Brugger was born 16 June 1918 in Kenosha, Wisconsin. He worked as a mechanic in his father"s garage until World World War II, when he worked in the cryptology section of the United States Signal Corps.
Brugger was born 16 June 1918 in Kenosha, Wisconsin. He worked as a mechanic in his father"s garage until World World War II, when he worked in the cryptology section of the United States Signal Corps.
He never attended college but had strong mechanical aptitude and mathematical skills.
After the war he went to work for Jockey International and rose to the position of chief engineer for Jockey"s worldwide knitting operations. He designed innovative knitting machines, including a compactor that minimized shrinkage in knitted underwear. Following a divorce in 1965 he moved to Mexico to work as a textile consultant.
In 1972 Brugger was working in Mexico City.
An amateur naturalist, he responded to a notice in a local newspaper written by Fred and Norah Urquhart, Canadian zoologists who were studying the migration patterns of monarch butterflies. The Urquharts had tracked the migration route as far as Texas, where it disappeared, and they thought it might continue into Mexico, so they were seeking volunteers to look for the butterflies.
Brugger searched for several years, first as a volunteer, then as a paid assistant to the Urquharts. On 9 January 1975, they finally found a mountaintop forest containing millions of resting monarch butterflies.
Their discovery was reported as the cover story in National Geographic magazine in August 1976.
Eventually a dozen such sites were located and were protected by the Mexican government as ecological reserves. The area is now a World Heritage Site known as the Monarch Butterfly Biosphere Reserve. The sites are popular with ecotourists who admire the beauty of the massed butterflies.
Ironically, Brugger could not appreciate that beauty.
He was totally colorblind. Brugger"s search and discovery is dramatized in the IMAX film Flight of the Butterflies.