1. ‘Food of the Hawaiian Goose.’;BALDWIN;Condor,1947
2. ‘The Common Crow of the United States.’;BARROWS;U.S. Dept. Agric. Bull.,1895
3. ‘Recent investigations of the food of European birds.’;BEAL;Auk,1897
4. ‘The food of certain birds of prey.’;BROWN;Brit. Birds.,1930
5. ‘On the food of some British birds.’;CAMPBELL;Brit. Birds.,1936