Table 1 Comparison of the body mass, basal metabolic rate and internal organ dry mass among Bramblings (Fringilla montifringilla), Little Buntings (Emberiza pusilla) and Eurasian Tree Sparrows (Passer montanus)

Sample size (n)

7

8

10

Body mass (g)

18.2 ± 0.3^b

14.9 ± 0.3^a

18.6 ± 0.6^b

F _2,22 = 21.303, p < 0.001

Basal metabolic rate [mL/(O₂·h)]

71.63 ± 3.90^a

63.36 ± 5.14^a

84.28 ± 3.68^b

F _2,21 = 5.402, p < 0.05

Muscle (mg)

394.0 ± 19.9

391.1 ± 26.3

435.2 ± 18.8

F _2,21 = 1.598, p > 0.05

Heart (mg)

50.8 ± 4.1

45.2 ± 5.3

59.9 ± 3.8

F _2,21 = 2.569, p > 0.05

Liver (mg)

187.1 ± 16.8

234.1 ± 22.2

223.1 ± 15.9

F _2,21 = 2.082, p > 0.05

Kidney (mg)

36.3 ± 2.2

36.2 ± 2.9

37.9 ± 2.1

F _2,21 = 0.175, p > 0.05

Gizzard (mg)

77.6 ± 8.4^a

94.4 ± 11.0^ab

120.5 ± 7.9^b

F _2,21 = 8.852, p < 0.01

Small intestine (mg)

72.3 ± 5.0

65.4 ± 6.6

71.5 ± 4.7

F _2,21 = 0.284, p > 0.05

Rectum (mg)

5.9 ± 0.3^b

3.8 ± 0.4^a

5.2 ± 0.3^b

F _2,21 = 5.815, p < 0.01

Digestive tract (mg)

155.7 ± 7.9^a

163.5 ± 10.5^a

197.1 ± 7.5^b

F _2,21 = 21.358, p < 0.001