Bird Anatomy: Supercilium or "Eyebrow"
Bird Anatomy
Supercilium - also commonly referred to as "eyebrow" -- is a stripe which starts above the bird's loral area (area between beak and eyes), continuing above the eye, and finishing somewhere towards the rear of the bird's head.
Where a stripe is present only above the lores, and does not continue behind the eye, it is called a supraloral stripe or simply supraloral.
The Supercilium is distinct from the eyestripe which is a line which runs across the lores, and continues behind the eye.
Samples:
| The Rufous-and-white Wren has a strong white supercilium (line above eye) and a brown stripe through the eye |  |
| The Eurasian Dotterel has a striking whitish supercilium (line above eye) |  |
| The Louisiana Waterthrush has a strong white flared supercilium |  |
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