Alarm calls and chick reaction: comments on Kleindorfer et al. (1996)
Article Abstract:
A framework explaining the increase of alarm calling with chick age has several conceptual flaws. The brood value hypothesis and the vulnerability hypothesis do not resolve the question of what proximate cues the parents should use to determine the strength of their defense. Survival probability likewise should not have been substituted for brood value from laying to fledging. Moreover, it was not sufficiently explained why the predator-specific chicks' responses affect alarm calling through the parents' risk assessment.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1998
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Red squirrels, Tamiasciurus hudsonicus, produce predator-class specific alarm calls
Article Abstract:
Research was conducted to characterize the predator-class specific alarm calls of red squirrels. The alarm calls are produced in response to aerial danger and are characterized by a short, low-amplitude, high-frequency call. The vocal responses were classified according to call types. The interactions between red squirrels and large birds were also observed in the study. However, it is not known whether the alarm calls are directed towards direct offsprings or less directly related individuals.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
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