Results 211 to 220 of about 1,655,427 (256)

A mechanism mediating inter-individual associations in mixed-species groups

Behavioral Ecology and Sociobiology, 2016
Individuals within groups benefit when they are phenotypically and behaviourally similar. Despite this, mixed-species aggregations are found among a wide range of animal taxa and are known to provide advantages in terms of enhanced foraging efficiency and predator avoidance.
Tanja K. Kleinhappel, Oliver H. P. Burman, Elizabeth A. John, Anna Wilkinson, Thomas W. Pike   +4 more
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Tamarin polyspecific associations: Forest utilization and stability of mixed-species groups

Primates, 1999
Niche separation is likely to play a key role in the formation of mixed-species groups. Saddle-backed tamarins (Saguinus fuscicollis) were studied at three sites with different primate communities in northern Bolivia: (1) with red-bellied tamarins,S. labiatus; (2) with emperor tamarins,S. imperator; and (3) without a congeneric species.
H. Buchanan-Smith
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Coordination in Primate Mixed-Species Groups

2010
Groups formed by individuals from different species (mixed-species groups) are a widespread phenomenon amongst primates. Although the formation and maintenance of such mixed-species groups may incur costs to participating individuals, they render a net benefit, mainly through increased safety from predators and increased foraging efficiency.
E. Heymann
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Benefits to satellite members in mixed-species foraging groups: an experimental analysis

Animal Behaviour, 1998
Hypotheses proposed to explain the formation of mixed-species foraging groups have focused on both foraging and antipredation benefits. Mixed-species flocks of bark-foraging birds form during the winter in the eastern deciduous forests of North America.
, Dolby, , Grubb jr TC
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Scanning Behavior of Finches in Mixed-Species Groups

The Condor, 1988
1986. Social dominance, mating and spacing systems, female fecundity, and vocal dialects in captive and free-ranging Brown-headed Cowbirds, p. 127-185. In R. F. Johnston [ed.], Current ornithology. Vol. 3. Plenum Press, New York. SELANDER, R. K., AND D. R. GILLER. 1960. First year plumages of the Brown-headed Cowbird and Redwinged Blackbird.
J. W. Popp
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Prey selection by plovers: Optimal foraging in mixed-species groups

Animal Behaviour, 1984
Abstract Prey (earthworm) size selection was investigated in lapwings ( Vanellus vanellus ) and golden plovers ( Pluvialis apricaria ) feeding in mixed species flocks and compared with that predicted by an optimal foraging model based on energy intake.
D.B.A. Thompson, C.J. Barnard
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Social dynamics of mixed-species groups of Jamaican reef fishes

Behavioral Ecology and Sociobiology, 1977
1. Observation of coral reef fish in Jamaica revealed a continuous and erratic series of fluctuations in both individual and species group size. 2. No apparent trend existed between group size or species composition with any subsequent changes in the group.
M. Itzkowitz
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Mixed-species primate groups in the kibale forest: Ecological constraints on association

International Journal of Primatology, 1996
Five species of diurnal primates in the Kibale Forest of western Uganda— red colobus (Colobus badius),black- and- white colobus (Colobus guereza),redtail monkeys (Cercopithecus ascanius),blue monkeys (Cercopithecus mitis),mangabeys (Cercocebus albigena)-often associate in mixed- species groups that vary in size and composition from day to day.
Colin A. Chapman, Lauren J. Chapman
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Aggression and nest spacing in single and mixed species groups of seabirds

Oecologia, 1997
When heterospecific seabirds are part of a nesting colony, there may be less opportunity for conspecifics to come in direct contact with each other, resulting in lower intraspecific aggressiveness. To determine if individuals spend less time in aggressive behavior when nesting in conspecific rather than heterospecific groups, we compared the behavior ...
Sandra M, Pius, Paul L, Leberg
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Interspecific communication in mixed-species groups of tamarins: evidence from playback experiments

Animal Behaviour, 2001
Long-call vocalizations have been hypothesized to serve as communicative signals both within and between tamarin species. Prior evidence for the use of long calls as interspecific signals, however, is based solely on observations of apparent countercalling between species.
Tammy L. Windfelder
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