The thermal and energetic significance of cavity roosting in Mountain Chickadees and Juniper Titmice

Article Abstract:

Cavity roosts play a significant role in the reduction of convective heat loss in Mountain Chickadees and Juniper Titmice, according to research investigating the thermal and energetic benefits of cavity roosting in summer and winter-acclimatized Mountain Chickadees and Juniper Titmice. The use of cavity roosts brings substantial nocturnal energy savings, which in turn bring enhanced fasting endurance. In winter, metabolic heating of the air within the cavity is a significant thermal benefit.

Birds, Bird eggs, Bird nests

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Thermoregulatory responses of bridled and juniper titmice to high temperature

Article Abstract:

A study was conducted to examine differences in habitat preference between the Bridled Titmice and Juniper Titmice in Arizona. The oxygen consumption, evaporative water loss and body temperature of post-breedng titmice were also analyzed in the study to determine any physiological correlates related to habitat selection. Results indicated that physiology plays a critical role in the habitat preferences of titmice.

Behavior, Animal behavior, Habitat selection

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Seasonal energetics of Mountain Chickadees and Juniper Titmice

Article Abstract:

Research is presented concerning the daily energy expenditure of Juniper Titmice and Mountain Chickadees. The similarity between foraging energy requirements and alert perching energy requirements is discussed.

Physiological aspects, Natural history, Energy metabolism, Ornithological research

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