What subtle facial feature is often described as incomplete or weak on the Willow Flycatcher?
Answer
The eye-ring
The physical description of the Willow Flycatcher emphasizes its generally subtle, drab appearance, which includes pale grayish-white underparts and olive-green upperparts. A specific, delicate facial feature noted for its lack of prominence is the eye-ring, which is characteristically described in field guides and scientific descriptions as being weak or incomplete. This subtle visual detail contributes to the difficulty in visually identifying the bird, especially when compared to the complexity and clarity of its vocalization.
Related Questions
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