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Table 1 Total body and fat mass are higher in winter compared to summer birds

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

 

Summer [19]

Winter [19]

Body mass (g)

40.78 ± 0.78

42.95 ± 0.72*

Lean mass (g)

33.31 ± 0.52

32.39 ± 0.41

Fat mass (g)

0.84 ± 0.12

2.49 ± 0.32*

  1. Data are presented as mean ± SEM. with number of observations noted after each season
  2. * A significant difference between groups