|Hatch Year Ring-billeds. Slightly darker scapulars shown by the individual on the left.|
|Left bird shows slightly paler scapulars with whiter hues, while the individual on the right has browner hues.|
These differences can be nearly impossible to detect under bright sunglight, and as always, observers should choose overcast days to accurately evaluate grays. Notice how the gulls in my photos aren't casting any shadows onto the ground - a good indication that the lighting is neutral, or mostly neutral.
|The variation in upperpart "hues" on these two individuals should be noticeable.|
|Aside from gray, these post-juvenile scapulars show a mix of grown centers and white edges. These cololrs surely influence how the eye perceives the gray colors on HY birds.|
|A good example of a "pale" HY Ring-billed. This individual shows silvery-white hues on the post-juvenile scapulars.|