What is Bateman's principle? Bateman's principle Lots of sperm Feweggs Sperm must compete over eggs Vria inepaduivesc ie mudi in males tan in female The vane isame ete eity of soa elecion Males must compete over females Lots of sperm Feweggs A Territoral males direct more courtship displays towards females that have shown up on their teritory for the first time compared to long term females companions. Males must maimice the number of mates Preferencefor "new females A single bird eggmay constitute 15-20% of female's body mass Lots of sperm Few eggs Females must maimize reproductive success per egg CS Scanned with CamScanner

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Animal Behavior

Animal behavior can be defined as all the things that animals do. In response to a stimulus, an animal performs a certain fixed action pattern, or FAP, of behavior. This response occurs to make the animal more adaptable to change. So, behavior is generally a stimulus-oriented response. A behavior is an expression of the capabilities of the nervous system. A stimulus is determined by the environment, while the nervous system determines a response.