What Small native cat to North and South America did Carl B. Koford make studies on in the 50's and 70's?
Carl B. Koford Carl Buckingham Koford (September 3, 1915 in Oakland, California – December 3, 1979 in Berkeley, California) was an American biologist who is known for his research work on the behavior of the California condor. He attended the Piedmont High School and studied at the University of Washington. Koford began his field work about the California condor in March 1939. More than 400 days until June 1941 he spend with the condors. During World War II he interrupted his studies to serve in the U.S. Navy. In 1946 his observations on the condors continued. In 1953 he published the report "The California Condor" where he gave a first estimation of the world population of about 60 individuals. In the 1950s and again in the 1970s he went to South America where he made studies on species like the Vicuña, the Jaguar, the Ocelot or the Jaguarundi. After rumours about the survival of some individuals of the thought to be extinct Mexican grizzly bear Koford went to Mexico in 1969 but he failed to rediscover this bear.
Gray fox The gray fox ("Urocyon cinereoargenteus"), or grey fox, is a carnivorous mammal of the family Canidae ranging throughout most of the southern half of North America from southern Canada to the northern part of South America (Venezuela and Colombia). No other canid's natural range spans both North and South America and it is the only American canid that can climb trees. This species and its only congener, the diminutive Channel Island fox ("Urocyon littoralis"), are the only living members of the genus "Urocyon", which is considered to be the most basal of the living canids. Though it was once the most common fox in the eastern United States, and still is found there, human advancement and deforestation allowed the red fox to become more dominant. The Pacific States still have the gray fox as a dominant. Its specific epithet "cinereoargenteus" means "ashen silver".