Nocturnal Hypothermia in Seasonally Acclimatized Mountain Chickadees and Juniper Titmice
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چکیده
منابع مشابه
Nocturnal Hypothermia in Seasonally Acclimatized Mountain Chickadees and Juniper Titmice
We measured body temperature of Mountain Chickadees (Poecile gambeli) and Juniper Titmice (Baeolophus ridgwayi) at different times of day and under a range of ambient temperatures in order to determine the use of nocturnal hypothermia in seasonally acclimatized small passerines. Our findings show both species used nocturnal hypothermia year-round. Depth of hypothermia was inversely correlated t...
متن کاملSeasonal metabolic acclimatization in mountain chickadees and juniper titmice.
Mountain chickadees and juniper titmice from northern Utah were examined to determine metabolic and body-composition characteristics associated with seasonal acclimatization. These species use behavioral adaptations and nocturnal hypothermia, which reduce energetic costs. These adjustments could reduce the need for extensive metabolic adjustments typically found in small passerines that overwin...
متن کاملThermoregulation and Habitat Preference in Mountain Chickadees and Juniper Titmice
The Mountain Chickadee (Poecile gambeli) and the Juniper Titmouse (Baeolophus ridgwayi) are closely related, ecologically similar passerines sympatric in portions of their range. However, Mountain Chickadees prefer higher altitude, cooler habitats than Juniper Titmice. We measured oxygen consumption, evaporative water loss, body temperature, and thermal conductance on seasonally acclimatized in...
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متن کاملSpatial encoding in mountain chickadees: features overshadow geometry.
Encoding the global geometric shape of an enclosed environment is a principal means of orientation in human and non-human animals. Animals spontaneously encode the geometry of an enclosure even when featural information is available. Although features can be used, they typically do not overshadow geometry. However, all previously tested organisms have been reared in human-made environments with...
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ژورنال
عنوان ژورنال: The Condor
سال: 2005
ISSN: 0010-5422,1938-5129
DOI: 10.1093/condor/107.1.151