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In ethology, fission–fusion society is one in which the size and composition of the social group change as time passes and animals move throughout the environment; animals merge into a group (fusion)—e.g. sleeping in one place—or split (fission)—e.g. foraging in small groups during the day.
Group foraging can thus reduce an animal's foraging payoff. [27] Group foraging may be influenced by the size of a group. In some species like lions and wild dogs, foraging success increases with an increase in group size then declines once the optimal size is exceeded. A myriad number of factors affect the group sizes in different species.
A study conducted on the Alaskan moose shows that with increasing group size, there is a decrease in foraging efficiency. [32] This is result of increased social aggression in the groups, as the individuals of the group spent most of its time in alert-alarm postures, thus spending less time foraging and feeding, reducing its foraging efficiency.
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A key advantage to group living is the ability for individuals in a group to access information gained by other group members. [1] This ability to share information can benefit many aspects of a group’s success, such as increased foraging efficiency and increased defenses against predators.
After years of terrible treatment, some brave dogs recently had the time of their lives. Beagle Freedom Project, a U.S. based non-profit organization, worked with several groups in South Korea to ...
Vigilance, in the field of behavioural ecology, refers to an animal's monitoring of its surroundings in order to heighten awareness of predator presence. Vigilance is an important behaviour during foraging as animals must often venture away from the safety of shelter to find food.