This is a one-page paper on the topic of behavioral ecology. What are the approaches used to study hunter-gatherer cultures and population. The earliest societies of humans have been known to be hunters and gatherers. Many of the hunting and gathering societies are due to ecological variations. There are few typical patterns of these people. The behavior patterns of hunter-gatherers depend upon their economy. Yet, they are highly diverse. "The ecological models focus on quantitative aspects of food resources and sharing. Models may fall into two camps: ecological or ideological. These have been examined in ethnographic settings.