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Al-Dabagh, M. A. 1964. The incidence of blood parasites in wild and domestic birds of Columbus, Ohio.

Amadon, D. 1966. The super:pecies concept.

Bergstrand, J. L. & Klimstra, W. D. 1964. Ectoparasites of the Bobwhite Quail in Southern Illinois.

Bernis, F. 1963. La invernada y migración de nuestros Ansares.

Brinck, P., Svedmyr, A. & Zeipel, G. von. 1965. Migrating birds at Ottenby, Sweden, as carriers of ticks and possible transmitters of tick-borne encephalitis virus.

Carrick, R. & Ingham, S. E. 1967. Antarctic sea-birds as subjects for ecological research.

Carriker, M. A. 1966. New species and records of Mallophaga (Insectnt) from Neotropical owls (Strigiformes).

Davis, P. 1963. Recent developments at Fair Isle.

Diamond, A. W., Douthwaite, R. J. & Indge, W. J. E. 1965. Notes on the birds of Berneray, Mingulay and Pabbay.

Dott, H. E. M. 1967. Numbers of Great Skuas and other seabirds of Hermaness, Unst.

Evans, P. R. & Flower, W. U. 1967. The birds of the Small Isles.

Grierson, J. 1962. A check-list of the birds of Tentsmuir, Fife.

Gysels, H. 1964. Bijdrage tot de Systematiek van de Vogels, aan de hand van de elektroforese in agar van de oplosbare lens- en spierproteinen.

Harris, M. P. 1964. Ring loss and wear of rings on marked Manx Shearwaters.

Hytönen, 0. 1965. Fruhjahrsbeobachtungen uber die Vogelwelt der siidlichen Toskana.

Jackson, E. E. 1966. The birds of Foula.

Johnsgard, P. A. 1967. Sympatry changes and hybridisation incidence in Mallards and Black Ducks.

Johnson, N. K. 1966. Bill size and the question of competition in allopatric and sympatric populations of Dusky and Gray Flycatchers.

MOEPCKE, M. 1965. Zur Kenntnis einiger Furnariiden (Aves) der Küste und des westlichen Andenabhanges Perus.

Lanyon, W. E. 1966. Hybridization in Meadowlarks.

Maynard Smith, J. 1966. Sympatric speciation.

Mayr, E. 1965. What is a fauna?

McClure, H. E. 1966. An Asian bird-bander's manual.

Medway, Lord. 1966. Field characters as a guide to the specific relations of Swiftlets.

Novobytov, A. 1968. [Bird strikes on aircraft in the Soviet Union.] Yuni Tekhnik [The Young Technician]

Packard, G. C. 1967. House Sparrows: Evolution of populations from the Great Plains and Colorado Rockies.

Pearson, J. M. & Scott, P. 1965. “Save the Flamingo”: was it a good idea?

Pennie, I. D. 1962. A century of bird-watching in Sutherland.

Pennie, I. D. 1966. Ornithology in Scotland: a historical review.

Penny, R. L. & Sladen, W. J. L. 1966. The use of Teflon for banding Penguins.

Prigogine, A. 1967. La faune ornithologique de l'ile Idjwi.

Sandeman, P. W. 1965. Attempted reintroduction of White-tailed Eagle to Scotland.

Sessions, P. H. B. 1966. Notes on the birds of Lengetia Farm, Mau Narok.

Short, L. L. 1965. Variation in West Indian Flickers (Aves, Cokzptes).

Sick, H. 1963. Hybridisation in certain Brazilian Fringillidae (Sporophila and Oryzoborus).

Siaden, W. J. L. & Friedmann, H. 1961. Antarctic Ornithology.

Sladen, W. J. L. 1965. Ornithological research in Antarctica.

Slater, R. L. 1967. Helminths of the robin, Turdus nzigratorius Ridgway, from Northern Colorado.

Smith, V. W. 1966. Birds seen on a trans-Saharan overland crossing in spring 1966.

Strange, I. J. 1965. Beauchene Island.

Voous, K. H. 1967. Man and predators.

Vos, A. De. 1964. Range changes of birds in the Great Lakes region.

Waters, W. E. 1962. The birds of St. Kilda—winter 1961–62.

Weins, J. A. 1966. On group selection and Wynne-Edwards' hypothesis.