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Promiscuous-animals mate with multiple partners and form no lasting bonds. Polygamous-a type of relationship in which an individual of one sex mates with several others. Monogamous-animals form a bid with a single partner and both partners care for their offspring. Behavior- encompasses a wide range of activities. Behavioral ecologists-study behavior in an evolutionary context. Stimuli-environmental cues that cause a response. Proximate causes-answers the such questions about the immediate mechanism for a behavior. Ultimate causes-are the evolutionary explanations for behavior, or the answers to ultimate questions. Innate behavior-bahavior that is under strong genetic control and is performed in virtually the same way by all individuals of a species. Fixed action patterns-an unchangeable series of actions triggered by a specific stimulus. Learning-modification of behavior as a result of specific experiences. Habituation-an animal learns not to respond to a repeated stimulus that conveys little or no information. Imprinting-learning that is limited to a specific time period in an animals life and that is generally irreversible. Sensitive period-limited phase in an animals development when it can learn a certain behavior. Kinesis-a random movement in response to a stimulus. Taxis-a response directed toward or away from a stimulus. Spatial learning-animals establish memories of land marks in their environment that indicate the locations of food, net sites, prospective, mates, and potential hazards. Cognitive map-an internal representation or code of the spatial relationships amount objects in an animals surroundings. Migration-the regular back and forth movement of animals between two geographic areas. Associatative learning-the ability to associate one environmental feature with another. Trial and error learning-an animal learns to associate one of it's own behaviors with a positive or negative effect. Social learning-learning by observing the behaviors of others. Cognition-the process carried out by an animals nervous system to perceive, store, integrate and use information gathered by senses. Problem solving-process of applying past experience to overcome obstacles in novel situations. Foraging-includes not only eating, but also any mechanism an animal uses to search for, recognize, and capture food items. Optimal foraging theory-an animals feeding behavior should provide maximal energy gain with minimal energy expense and minimal risk of being eaten while foraging. Search image-the mechanism that enables an animal to find particular foods efficiently. Communication-an essential element of interactions between individuals. Signal-a stimulus transmitted by one animal to another. Social behavior-any kind of interaction between two or more animals, usually of the same species. Sociobiology-evolutionary theory to the study and interpretation of social behavior-the study for how social behaviors are adaptive and how they could have evolved by natural selection. Territory-is an area, usually fixed in location, which individuals defend and from which other members of the same species are usually excluded. Agnostic behavior-including threats, rituals, and sometimes combat that determine which competitor gains access to the resource. Dominance hierarchy-ranking of individuals based on social interactions. Altruism-behavior that reduces an individuals fitness while increasing the fitness of others in the population. Kin selection-natural selection favoring altruistic behavior that benefits relatives. Reciprocal altruism-an altruistic act that may be repaid at a later time by the beneficiary.