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Table 4 Sex-specific morphological divergences between the teydea and polatzeki Blue Chaffinches

From: Species-level divergences in multiple functional traits between the two endemic subspecies of Blue Chaffinches Fringilla teydea in Canary Islands

Sex Trait teydea (Tenerife) polatzeki (Gran Canaria) Test of difference between means Effect size Cohen’s d
Males Wing length (mm) 102.8 ± 2.1 (118) 96.8 ± 0.7 (16) t 132  = 11.00, P < 0.001 2.95
Tail length (mm) 83.9 ± 1.9 (58) 78.2 ± 1.7 (15) t 71 = 10.54, P < 0.001 3.09
Bill length (mm) 20.37 ± 1.09 (83) 16.76 ± 0.97 (22) t 103  = 14.16, P < 0.001 3.43
Bill depth (mm) 10.48 ± 0.37 (83) 10.18 ± 0.28 (22) t 103  = 3.54, P < 0.001 0.86
Tarsus length (mm) 26.31 ± 0.75 (83) 25.87 ± 0.30 (22) t 103  = 2.69, P < 0.01 0.65
Body mass (g) 32.24 ± 1.70 (109) 28.33 ± 1.06 (22) t 129 = 10.71, P < 0.001 2.52
Females Wing length (mm) 93.5 ± 2.0 (87) 89.2 ± 1.2 (16) t 101 = 8.18, P < 0.001 2.25
Tail length (mm) 75.9 ± 2.0 (42) 72.8 ± 1.4 (15) t 55  = 5.64, P < 0.001 1.73
Bill length (mm) 20.43 ± 1.30 (61) 16.88 ± 0.82 (16) t 75  = 10.39, P < 0.001 2.96
Bill depth (mm) 10.30 ± 0.37 (61) 9.94 ± 0.27 (16) t 75  = 3.63, P < 0.001 1.03
Tarsus length (mm) 25.82 ± 0.79 (61) 25.51 ± 0.40 (17) t 76  = 1.65, P = 0.102 0.46
Body mass (g) 28.8 ± 1.5 (83) 27.1 ± 1. 4 (17) t 98  = 4.38, P < 0.001 1.18
  1. Mean values are given with their ± SD (N). Statistical tests are two-sample t-tests with unequal variances