J.D. Jacobi F. L. Ramsey J. M. Scott 1981 A multidisciplinary team approach was used to simultaneously map the distribution of birds, selected food items, and major vegetation types in 34,000- to 140,000-ha tracts in native Hawaiian forests. By using a team approach, large savings in time can be realized over attempts to conduct similar surveys of smaller scope, and a systems approach to management problems is made easier. The methods used in survey design, training observers, and documenting bird numbersand habitat descriptions are discussed in detail. application/pdf en U.S. Fish and Wildlife Service Avian surveys of large geographical areas: A systematic approach article