David E. Davis (ecologist)
He received a BA at Swarthmore College in 1935, then an MS and PhD at Harvard University in 1939. His career included 13 years as Assistant Professor at Johns Hopkins School of Hygiene and Public Health where, among other works, he started the Rodent Ecology Project. Through systematic research he debunked the myth of 1 rat per person in NYC, and placed the rat population at about 250,000.
- Rats: A Year With New York's Most Unwanted Inhabitants by Robert Sullivan (Bloomsbury, 2004)
- obituary in The Auk 112(2)491-492, 1995