A reassessment of the effect of body mass upon flight speed and predation risk in birds
Article Abstract:
Research was conducted to examine the impact of body mass on the predation risk and flight speed in birds. The mass/velocity relationship has been observed to be less marked when birds are alarmed. In zebra finches, mass proved to be a poor predictor of the flight velocity of alarmed birds. It can be explained by the fact that alarmed birds increase their velocity when heavy than when light. Therefore, the use of mass as a predictor of predation risk in birds cannot be used effectively without first examining its effects on the flight velocity of alarmed birds.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1998
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The influence of chimpanzee predation on group size and anti-predator behaviour in red colobus monkeys
Article Abstract:
A study of the behavior of red colobus monkeys in the Gombe National Park, Tanzania, revealed that they employed a communal defense strategy, whereby females and immatures moved near adult males and males reduced distances with other males of the species in the presence of predators, as a defensive response to chimpanzee predation. Chimpanzee predation is attributed as the major cause of the depleting red colobus monkey population in the park.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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Absolute versus per unit body length speed of prey as an estimator of vulnerability to predation
Article Abstract:
The hypothesis that relative speed rather than absolute speed is relevant to predation vulnerability has been tested in a predation simulation experiment. The experiment appears shows that in some situations the link between sprint speed and catchability of prey animals can be size dependent, adding to the idea that the link between speed performance and vulnerability, survival and fitness in the field is still poorly understood.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1999
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