Yawning and Other Maintenance Activities in the South African Ostrich

Authors

E. G. Franz Sauer
E. M. Sauer

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Recommended Citation

Sauer, E. G. Franz and Sauer, E. M. (1967) "Yawning and Other Maintenance Activities in the South African Ostrich," The Auk: Vol. 84: Iss. 4, Article 8.
Available at: https://digitalcommons.usf.edu/auk/vol84/iss4/8