The Evolution of Behavior in Gulls
Gulls communicate with one another by means of calls, postures and movements. Differences in the signaling behavior of various species reflect the influence of environment on gull evolution
Defense by Color
It is generally assumed that the coloration of some animals is for the purpose of deceiving predators. Is this assumption true? An account of some experimental efforts to answer the question
The Courtship of Animals
The elaborate patterns of behavior that precede mating in some species present a puzzling biological problem. Their function is sought through the classic interplay of theory and experiment
The Curious Behavior of the Stickleback
This insignificant fish has a ceremonious sex life. To attract females the male builds a house, changes color and does a kind of dance, a ritual singularly useful to the study of instinct