Concept 51.1  Behavioral ecologists distinguish between proximate and ultimate causes of behavior	51.01
 Concept 51.2  Many behaviors have a strong genetic component	51.02
 Concept 51.3  Environment, interacting with an animal's genetic makeup, influences the development of behaviors	51.03
 Concept 51.4   Behavioral traits can evolve by natural selection	51.04
 Concept 51.5  Natural selection favors behaviors that increase survival and reproductive success	51.05
 Concept 51.6  The concept of inclusive fitness can account for most altruistic social behavior	51.06
Activity: Honeybee Waggle Dance Video	51&A
Investigation: How Can Pillbug Responses to Environments Be Tested	51&A
Video: Albatross Courtship Ritual	AlbatrossCourtship-V.html=AlbatrossCourtship-V.swf
Video: Bee Pollinating	BeePollinating-V.html=BeePollinating-V.swf
Video: Blue-footed Boobies Courtship Ritual	BoobiesCourtship-V.html=BoobiesCourtship-V.swf
Video: Chimp Agonistic Behavior	ChimpAgonistic-V.html=ChimpAgonistic-V.swf
Video: Chimp Cracking Nut	ChimpCrackNut-V.html=ChimpCrackNut-V.swf
Video: Ducklings	Ducklings-V.html=Ducklings-V.swf
Video: Giraffe Courtship Ritual	GiraffeCourtship-V.html=GiraffeCourtship-V.swf
Video: Snake Wrestle Ritual	SnakeWrestle-V.html=SnakeWrestle-V.swf
Video: Wolves Agonistic Behavior	WolvesAgonistic-V.html=WolvesAgonistic-V.swf
med/Vid/Campbell/51_17ChimpCrackNut_VT.swf
med/Vid/Campbell/51_29GiraffeCourtship_VT.swf