Patch-leaving decisions in black-capped chickadees
Article Abstract:
The initial prey density of 60% in the unstable patch has a shorter giving-up time than the initial prey density of 30%, for the black-capped chickadees, Parus atricapillus. The giving-up time is independent of the point of transition. The rate of capturing is lower in the 30%-0 treatment than in the 60%-0 treatment. In a double-step change, with different prey densities during every change, the giving up time is longer for the 60%-30%-0 treatment than for the 60%-60%-0 treatment. The results are compared with different statistical decision theory models.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1996
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Long-term persistence of a culturally transmitted vocalization of the black-capped chickadee
Article Abstract:
Recordings of the gargle vocalization of black-capped chickadees at the same site over a nineteen year period were analyzed to reveal that for the most part the recordings of the vocalization were similar. Chickadee gargles and vocalizations are transmitted more precisely than the other vocalizations. This similarity in the vocalization may be attributed to the inheritance of note types in linkage groups which is transmitted according to the ordering of note types in the syntax in units.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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Context-related vocalization rates of fallow bucks, Dama dama
Article Abstract:
Fallow bucks were studied for their short-term vocalization rates, to determine the main recipients of the signal. Fallow buck groaning rates were found to be highly variable, linked to the contexts of groaning, and were higher during the rut than during the prerut. A postcopulation call was identified, although the presences of a harem did not contribute to the varied groaning rates.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1999
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