Broley. C. L.
1947. Migration and nesting of Florida bald eagles. Wilson Bull. 59: 3-20.
Bruderer, B. and P. Steidinger.
1972. Methods of quantitative and qualitative analysis of bird migration with a tracking radar, p. 151-167. In: Caller, S. R., et al ed. Animal orientation and navigation symp. N.A.S.A. Wash., D.C. 606 p.
Clarke, W. E.
1912. Studies in bird migration. 2 vol. London.
Coffey, B. B., Jr.
1944. Winter home of chimney swifts discovered in northeastern Peru. Migrant 15(3): 37-38.
Cooch, G.
1955. Observations on the autumn migration of blue geese. Wilson Bull. 67(3): 171-174.