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Table 3 Predicted field metabolic rates (FMR) calculated using previously published cardinal FMR values and our measures of cardinal body temperatures during summer and winter

From: Energy savings due to the use of shallow body temperature reduction in overwintering Northern Cardinals

(LO2/h) Measured FMR during winter nighta Predicted FMR during winter night with summer night T b (Q 10 = 2) Predicted FMR during winter night with summer night T b (Q 10 = 3)
0.201 0.221 (+9.9 %) 0.233 (+16.1 %)
(LO2/h) Measured FMR during winter daya Predicted FMR during winter day with summer day T b (Q 10 = 2) Predicted FMR during winter day with summer day T b (Q 10 = 3)
0.226 0.240 (+6.2 %) 0.249 (+10.0 %)
  1. Predicted FMRs are accompanied by a percent increase from measured FMR, which represents potential energy savings due to winter body temperature depression. Predicted FMRs were calculated using Q 10 values of both 2 and 3 (exact value is unknown for this species)
  2. afrom Sgueoet al. [31]