Data and methods
Plumage reflectance from BirdColorBase.
The floor shows CIE x/y chromaticity. Height shows relative luminance Y under standard daylight (D65). This is human color vision; ultraviolet is not represented.
Screen colors are clipped to sRGB. Out-of-gamut colors cannot be faithfully displayed. The gamut outlines are 2D references, not 3D volumes. Photos illustrate the species, not the measured specimen.
Includes the archived nonpasserine dataset. This independently processed collection is not an exact reproduction of the article’s filtered subset. Repeated measurements are retained; point density is not bird abundance.
Data license (MIT)