Table 4 Variabilities (coefficients of variation, %) of brightness in the each sex among different parts.

From: Himalayan black bulbuls (Hypsipetes leucocephalus niggerimus) exhibit sexual dichromatism under ultraviolet light that is invisible to the human eye

Parts

Female

Male

Beak

37.43

38.76

Tarsus

29.53

24.50

Back

22.55

22.20

Belly

26.85

31.72

Nape

33.59

19.76

Breast

28.13

27.48

Forehead

32.55

31.79

Remige

14.84

12.12

Scapular feather

30.18

29.95

Tail

21.47

27.90

  1. Chi-squared test. P < 0.05 is in bold and italics.
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