Linking Plumage Dimorphism and Environmental Stress

Description

Measurements of L* and b* values of dark and white morphs of E. gularis, E. dimorpha, and E. garzetta.

Steps to reproduce

The values are measured by Konica-Minolta CR-400 Spectrophotometer from five different body regions: breast, belly, tail, vent, and back The wavelength reflection was recorded in Commission International d’Edairage LAB (CIELAB, also known as LAB) measurement system (Schanda, 2007; Hunter Associates Laboratory, 2008). The total of 186 museum specimens (E. garzetta: 112 white morphs; E. gularis: 23 dark and 11 white morphs; E. dimorpha: 24 dark and 16 white morphs; in total 139 white unicolor individuals and 47 unicolor dark individuals) have been measured three times. The mean of the three measurements has been presented.

Institutions

• University of Oklahoma
• Nord Universitetet

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