Table 2. Mean ± standard deviation (SD) (sample size) of sunbird measurements.

	Cinnyris chalybeus
**Differed significantly between male and female sunbirds (P <0.05).
	Male	Female
Bill length (mm)**	18.59 ± 1.03 (21)	16.45 ± 0.73 (6)
Bill base diameter (mm)	2.88 ± 0.27 (20)	2.92 ± 0.23 (6)
Bill height (mm)	3.53 ± 0.40 (21)	3.30 ± 0.44 (6)