Statistically significant behavioral transitions at 1 and 3 days of age.

Kinematic diagrams illustrating behavioral transitions that occurred more often than predicted by chance on days of age 1 and 3. Arrows indicate the direction of the transition. Three levels of arrow thickness, from smallest to largest, denote the degree of departure from randomness based on Freeman-Tukey values of 1–5 (black), 5–10 (orange), and >10 (red). Closed squares indicate high-intensity aggressive behaviors; open squares, low-intensity aggressive behaviors; triangles, non-interactive behaviors; circles, interactive, non-aggressive behaviors. Five sizes of symbols represent the relative frequency of occurrence of each particular behavior with respect to the entirety of behaviors for that age group: <1%, 1–5%, 5–10%, 10–15%, and >15%.