1. “The Distribution and Abundance of Animals.”;Andrewartha,1954
2. Life histories of North American gulls and terns.;Bent;Bull. U.S. nat. Mus.,1921
3. Morphological differentiation and adaptation in the Galapagos finches.;Bowman;Univ. California Publ. Zool.,1961
4. The effect of age and density of breeding birds on the time of breeding of the Kittiwake;Coulsen;Rissa tridactyla. Ibis,1960
5. “Bird Flocks and the Breeding Cycle.”;Darling,1938