ANIMAL BEHAVIOR

BEHAVIOR IS

•What an animal does and how it does it•A response to a stimulus•A stimulus is a signal

•The most important thing for studying behavior is observation

RUFFS•Philomachus pugnax•Migrate between Russia/Scandinavia and Southern Africa

OBSERVATIONS:•Jot down notes of anything interesting you see•Try to make good observations•Write down any questions you may have

SEXUAL DIMORPHISM Di = 2, Morph = Shape Sexual Dimorphism = Males and females have different shapes

SEXUAL SELECTIONOne sex (usually female) selects mates based upon appearance Being showy leads to having more mates

ALTRUISM

Altruism is doing good, helping others at the expense of yourselfCan natural selection explain altruism?

THE PRISONER’S DILEMMA Two criminals have been arrested for bank robbery The police do not have enough evidence for a bank robbery conviction, but do have enough for reckless endangerment

The criminals are split up and offered the following option:If A and B both snitch, they each serve 2 yearsIf A snitches and B stays quiet, A goes free and B serves 3 years If B snitches and A stays quiet, B goes free and A serves 3 yearsIf both remain silent both will serve 1 year for reckless endangerment