... of energy utilization will be highest in the winter, contrary to predictions based on life history theory, and (2) acclimatization of metabolism will occur at multiple levels of organization such that birds operate with a similar metabolic ceiling during different seasons. We measured field metabolic rates...

...-mail: [email protected] ) 20 4 2009 2009 ambush and active foragers energy expenditure feeding metabolism foraging mode locomotory capacity metabolic ceiling Animals can be classified as ambush (i.e. sit-and-wait) foragers, active foragers or herbivores according...