Dataset: suburban_bird.dat Source: T.R. Vale and G.R. Vale (1976). "Suburban Bird Populations in West-Central California," Journal of Biogeography, Vol. 3, pp. 157-165 Description: Number of birds observed in 17 West-Central CA suburbs, age of suburb and habitat index Variables/Columns Suburb 1-20 Year built 25-28 Years before 1975 35-36 Habitat index 40-44 /* Function of house, utilities, and shrubs/trees */ Number of individual birds observed 50-52