How does the black cap change in the non-breeding plumage of the Xeme?
Answer
It leaves only a dark smudge or patch around the eye and ear coverts
When the breeding season concludes and the Sabine’s Gull transitions into its non-breeding plumage, the distinct deep black hood characteristic of summer birds breaks up significantly. Instead of a solid cap, the coloration around the head becomes much more subdued, resulting in a generally mottled or gray appearance. Specifically, observers note that the dark coloration often resolves into just a dark smudge or distinct patch located specifically around the eye area and extending over the ear coverts. This change makes the bird appear less distinctly marked than its summer counterpart.
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Xeme Facts: Sabine's Gull (Xema) 𓅰 Animal Fact Files - YouTube
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