Results 241 to 250 of about 1,499,865 (292)

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.
Desmond B. A. Thompson, C. J. Barnard
semanticscholar   +2 more sources

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
semanticscholar   +2 more sources

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, P. Leberg
semanticscholar   +3 more sources

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.
T. L. Windfelder
semanticscholar   +2 more sources

Interindividual distances in mixed-species groups of ants: an estimation of cohesion in social groups

Journal of Ethology, 1995
Spatial organization was estimated in mixed-species groups of ants with interindividual distance measures as a function of: (1) the age of the workers when associated; and (2) the presence of the brood. Workers ofManica rubida (Myrmicinae) andFormica selysi (Formicinae) were reared in single-species groups (control) or in artificial, mixed-species ...
C. Errard, A. Lenoir
semanticscholar   +2 more sources

Mixed-Species Groups and Conservation

, 2017
E. Goodale, G. Beauchamp, G. Ruxton
semanticscholar   +2 more sources

Mixed-Species Groups

, 2014
G. Beauchamp
semanticscholar   +2 more sources

Moving Mixed-Species Groups in Different Taxa

, 2017
E. Goodale, G. Beauchamp, G. Ruxton
semanticscholar   +2 more sources

When close neighbours become good friends: plasticity of behavioural traits in sympatric fishes that form mono- and mixed-species groups

Marine and Freshwater Behaviour & Physiology, 2019
Like mono-species fish groups, formation of mixed-species assemblages is likely driven by trophic influences and interspecific behavioural traits. Our aim was to identify how sympatric estuarine species of differing phenotypes form mixed-species group ...
K. Middlemiss, D. Cook, W. Davison
semanticscholar   +1 more source

Behavioral Flexibility of Pine Siskins in Mixed Species Foraging Groups

The Condor, 1979
They [the Pine Siskins] were exceedingly fond of sunflower seeds, but their bills were so tender that they were hardly able to crack the hard shells so as to obtain the kernel inside. So they would watch their opportunity, and whenever an Evening Grosbeak came to the feeding-shelf and began cracking the seeds, he would be surrounded by several of the ...
Balph, David F., Balph, Martha Hatch
openaire   +1 more source