DRIVE, HOMEOSTASIS, AND TIME BUDGETS

The ethological concept of drive

• Supply of energy
• conflicting drives
• displacement behavior
• redirected behavior
• Musth

Modern concepts of homeostatic regulation

• Neurochemical and hormonal mechanisms.
• Behavioral thermoregulation

Balancing demands: how animals budget their time

• Time budgets

Developmental and seasonal changes

• Hormonal
• testosterone and estrogen