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Terminology of animal groups also varies among different taxonomic groups. Groups of sheep are termed herds, whilst groups of birds are referred to as colonies, or flocks. Most studies on group living focus strictly on groups comprising a single species. However, many mixed-species groups commonly occur in nature.
Collective animal behaviour is a form of social behavior involving the coordinated behavior of large groups of similar animals as well as emergent properties of these groups. This can include the costs and benefits of group membership, the transfer of information, decision-making process, locomotion and synchronization of the group.
They would instead lie along the stem group, a subset of animals related to, but not within, the crown group. The stem and crown group together are combined into the total group , given the name Tetrapodomorpha , which refers to all animals closer to living tetrapods than to Dipnoi ( lungfishes ), the next closest group of living animals. [ 19 ]
The term "species group" can be used to describe the manner in which individual organisms group together. In this non-taxonomic context one can refer to "same-species groups" and "mixed-species groups." While same-species groups are the norm, examples of mixed-species groups abound.
Animals that practice group-living often benefit from assistance in parasite removal, access to more mates, and conservation of energy in foraging. [50] Initially, the most obvious form of animal cooperation was kin selection , but more recent studies focus on non-kin cooperation, where benefits may seem less obvious.
Bird ringing is the term used in the UK and in some other parts of Europe, while the term bird banding is more often used in the U.S. and Australia. [49] bird strike The impact of a bird or birds with an airplane in flight. [50] body down The layer of small, fluffy down feathers that lie underneath the outer contour feathers on a bird's body. [51]
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Group of black-capped chickadees feeding at a bird feeder. Bird species living in a flock may capture prey, likely injured, from an unsuccessful bird within its flock. [2] This behavior is known as the beater effect and is one of the benefits of birds foraging in a flock with other birds. [2]