W.T. Van Velzen

Migration Patterns and Wintering Localities of American Ospreys

Charles J. Henny, W.T. Van Velzen · Journal of Wildlife Management · 1972 · 50 citations

Biology, Breeding Behavior, South America +14

Progress report on the North American Breeding Bird Survey

C.S. Robbins, W.T. Van Velzen · Acta Ornithologica · 1974 · 16 citations

Breeding Behavior, Avian Evolution, Progress Report +1

The breeding bird survey 1967 and 1968

C.S. Robbins, W.T. Van Velzen · Pittsburg State University Digital Commons (Pittsburg State University) · 1969 · 14 citations

Thirty-sixth breeding-bird census

W.T. Van Velzen · American Birds · 1972 · 13 citations

Breeding Behavior, Evolutionary Biology, Avian Evolution +1

The breeding bird survey, 1966

C.S. Robbins, W.T. Van Velzen · Pittsburg State University Digital Commons (Pittsburg State University) · 1967 · 13 citations