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Unformatted text preview: WHITE CROWNED SPARROW EXAMPLE Wingfield’s idea was that animals have a baseline testosterone level during the nonbreeding season that is very low. During the breeding season, they have a new, higher baseline. Then, upon stimulation, their testosterone concentrations reach a maximum level. Knowing that testosterone rises and controls courtship and aggression, how then does it relate to parental behaviors and incubation feeding? There is another hormone involved – prolactin Testosterone – main hormone responsible for aggression and courtship Prolactin – main hormone responsible for parental care...
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- Spring '09
- courtship behaviors, baseline testosterone level, testosterone peaks, testosterone peak