Achromatic plumage variation between and within hybridizing Black‐capped and Mountain chickadees

2021 ◽  
Author(s):  
Katherine B. Feldmann ◽  
Kathryn C. Grabenstein ◽  
Scott A. Taylor
Keyword(s):  
Mountain Chickadees

Note-type based species classification by black-capped and mountain chickadees

2010 ◽  
Author(s):  
Lauren M. Guillette ◽  
Marisa Hoeschele ◽  
Tara M. Farrell ◽  
Laurie L. Bloomfield ◽  
Christopher B. Sturdy
Keyword(s):  
Species Classification ◽  
Mountain Chickadees

scholarly journals Predictably harsh environment is associated with reduced cognitive flexibility in wild food-caching mountain chickadees

2017 ◽  
Vol 123 ◽  
pp. 139-149 ◽  
Author(s):  
Rebecca Croston ◽  
Carrie L. Branch ◽  
Angela M. Pitera ◽  
Dovid Y. Kozlovsky ◽  
Eli S. Bridge ◽  
...  
Keyword(s):  
Cognitive Flexibility ◽  
Wild Food ◽  
Harsh Environment ◽  
Food Caching ◽  
Mountain Chickadees

scholarly journals Nocturnal Hypothermia in Seasonally Acclimatized Mountain Chickadees and Juniper Titmice

The Condor ◽  
2005 ◽  
Vol 107 (1) ◽  
pp. 151-155 ◽  
Author(s):  
Sheldon J. Cooper ◽  
James A. Gessaman
Keyword(s):  
Body Temperature ◽  
Body Mass ◽  
Energy Savings ◽  
Ambient Temperatures ◽  
Energy Expenditures ◽  
Poecile Gambeli ◽  
Daily Energy ◽  
Para Determinar ◽  
Mountain Chickadees

AbstractWe 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 to body mass in Juniper Titmice but not in Mountain Chickadees. In both species, depth of hypothermia did not vary seasonally but nocturnal body temperature was regulated 3–11°C lower than daytime values. Nocturnal energy savings range from 7%–50% in chickadees and from 10%–28% in titmice. These nocturnal energy savings translate into ecologically important reductions in daily energy expenditures for these two species.Hipotermia Nocturna en Individuos de Poecile gambeli y Baeolophus ridgwayi Aclimatados EstacionalmenteResumen. Medimos la temperatura corporal de Poecile gambeli y Baeolophus ridgwayi a diferentes horas del día y en un rango de temperaturas ambientales para determinar el uso de hipotermia nocturna en pequeñas aves paserinas aclimatadas estacionalmente. Nuestros resultados muestran que ambas especies presentaron hipotermia nocturna durante todo el año. La profundidad de la hipotermia estuvo inversamente correlacionada con la masa corporal en B. ridgwayi, pero no en P. gambeli. En ambas especies, la profundidad de la hipotermia no varió estacionalmente, pero la temperatura corporal nocturna estuvo regulada 3–11°C por debajo de los valores diurnos. El ahorro nocturno de energía varió entre 7%–50% en P. gambeli y entre 10%–28% en B. ridgwayi. Estos ahorros nocturnos de energía se tradujeron en reducciones ecológicamente importantes en los gastos diarios de energía para ambas especies.

Effects of captivity and memory-based experiences on the hippocampus in mountain chickadees.

2009 ◽  
Vol 123 (2) ◽  
pp. 284-291 ◽  
Author(s):  
Lara D. LaDage ◽  
Timothy C. Roth ◽  
Rebecca A. Fox ◽  
Vladimir V. Pravosudov
Keyword(s):  
Mountain Chickadees

scholarly journals Seasonal Energetics of Mountain Chickadees and Juniper Titmice

The Condor ◽  
2000 ◽  
Vol 102 (3) ◽  
pp. 635-644 ◽  
Author(s):  
Sheldon J. Cooper
Keyword(s):  
Energy Expenditure ◽  
Metabolic Rate ◽  
Breeding Season ◽  
Basal Metabolic Rate ◽  
Energy Requirements ◽  
Daily Energy Expenditure ◽  
Poecile Gambeli ◽  
Daily Energy ◽  
Metabolic Data ◽  
Mountain Chickadees

Abstract I used behavioral, meteorological, and laboratory metabolism data to calculate daily energy expenditure (DEE) in seasonally acclimatized Mountain Chickadees (Poecile gambeli) and Juniper Titmice (Baeolophus griseus). Analyses of laboratory metabolic data revealed that foraging energy requirements were not significantly higher than alert perching energy requirements. Respective DEE of chickadees and titmice were 48.8 kJ day−1 and 48.3 kJ day−1 in summer and 66.3 kJ day−1 and 98.7 kJ day−1 in winter. DEE as a multiple of basal metabolic rate (BMR) was 2.31 in summer chickadees and 1.91 in summer titmice. DEE was 2.70 times BMR in winter chickadees and 3.43 times BMR in winter titmice. The marked increase in calculated DEE in winter birds compared to summer is in contrast to a pattern of increased DEE in the breeding season for several avian species. These data suggest that winter may be a period of even greater stringency for small birds than previously believed.

Long-Term Unpredictable Foraging Conditions and Physiological Stress Response in Mountain Chickadees (Poecile gambeli)

2001 ◽  
Vol 123 (3) ◽  
pp. 324-331 ◽  
Author(s):  
Vladimir V. Pravosudov ◽  
Alexander S. Kitaysky ◽  
John C. Wingfield ◽  
Nicola S. Clayton
Keyword(s):  
Stress Response ◽  
Physiological Stress ◽  
Poecile Gambeli ◽  
Physiological Stress Response ◽  
Mountain Chickadees

Influence of Vegetation on Occupation of Nest Boxes by Chestnut-Backed and Mountain Chickadees

1999 ◽  
Vol 80 (3) ◽  
pp. 90 ◽  
Author(s):  
Leonard A. Brennan ◽  
Michael L. Morrison ◽  
Donald L. Dahlsten
Keyword(s):  
Nest Boxes ◽  
Mountain Chickadees

scholarly journals Correction to: ‘Fluctuations in annual climatic extremes are associated with reproductive variation in resident mountain chickadees’

2018 ◽  
Vol 5 (8) ◽  
pp. 181248
Author(s):  
Dovid Y. Kozlovsky ◽  
Carrie L. Branch ◽  
Angela M. Pitera ◽  
Vladimir V. Pravosudov
Keyword(s):  
Climatic Extremes ◽  
Mountain Chickadees
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