| Beak length (mm) | Beak width (mm) | Culmen length (mm) | Tarsus length (mm) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean ± SD | t-test | P | Mean ± SD | t-test | P | Mean ± SD | t-test | P | Mean ± SD | t-test | P | |
Male | ||||||||||||
 B. thoracicus (16) | 20.74 ± 0.24 | 2.95 | 0.01 | 11.73 ± 0.28 | − 0.84 | 0.44 | 20.56 ± 0.28 | − 0.031 | 0.97 | 41.59 ± 0.33 | − 0.16 | 0.12 |
 B. sonorivox (10) | 22.02 ± 0.31 |  |  | 11.38 ± 0.35 |  |  | 20.55 ± 0.36 |  |  | 40.81 ± 0.41 |  |  |
Female | ||||||||||||
 B. thoracicus (7) | 19.77 ± 0.49 | 3.63 | 0.002 | 11.00 ± 0.25 | 1.46 | 0.88 | 20.71 ± 0.41 | − 0.15 | 0.88 | 39.46 ± 0.58 | − 0.26 | 0.74 |
 B. sonorivox (14) | 21.76 ± 0.34 |  |  | 11.50 ± 0.18 |  |  | 20.64 ± 0.29 |  |  | 39.22 ± 0.41 |  |  |