Biology in the Twentieth Century

The Biology of Behavior:
Ethology and Sociobiology

"The penguin dance" from Julian S. Huxley. "The courtship habits of the great crested grebe
(Podiceps cristatus)", Proceedings of the Zoological Society of London. 25 (1914)

(Readings: Graham, Between Science and Values, pp. 161-213;
and Niko Tinbergen, "Watching and Wondering"; in History 338 Reader.)