noun
- the upper regions or surfaces of something, especially the upper plumage of a bird
Usage: ornithology
Examples
- The robin’s upperparts are dark gray while its breast is bright red.
- The field guide described the hawk’s upperparts as brown with darker streaks.
- Ornithologists carefully examine both the upperparts and underparts when identifying birds.
- The sparrow’s upperparts showed distinctive white wing bars.
- During molting season, the bird’s upperparts appeared patchy and uneven.
- The upperparts of the duck gleamed with an iridescent green sheen.