Not reliably identifiable; possibly a yellow-rumped warbler (Myrtle or Audubon's form)

This is a slender gray feather with a conspicuous yellow end. Yellow-rumped warblers are active, medium-small songbirds with yellow patches and bold seasonal plumage, but this specimen alone cannot confirm that identification.

Dark gray to olive-gray shaft and vane with a bright yellow tip or terminal patch. Lighting and the photographed surface obscure the exact hues and any subtle pattern.

The vane appears pennaceous and mostly joined, though fine barb detail is not resolved in the image.

A slender gray rachis runs through the feather; barbs appear closely arranged, with no clear bands or other markings visible.

Appears smooth and matte, but image resolution does not show surface texture or barb condition clearly.

Likely a body feather rather than a large flight feather; its compact shape and yellow terminal patch are suggestive but not diagnostic.

The strongest visible clue is the yellow terminal patch against a dark gray vane. That pattern is not unique enough to identify a species confidently.

If from a yellow-rumped warbler, it commonly uses coniferous and mixed forests during breeding and varied woodland, shrubland, and coastal habitats in winter.

Yellow-rumped warblers breed across much of North America and migrate south for winter; exact range depends on the Myrtle or Audubon's form.

If the tentative identification is correct, the bird is an insectivore during breeding and also consumes fruit, contributing to insect control and seed dispersal. Yellow-rumped warblers remain widespread, though local habitat changes can affect populations.

Other warblers and small songbirds can have gray feathers with yellow areas. A full set of feathers, precise measurements, location, and comparison with reference specimens would be needed to distinguish them.

Yellow-rumped warblers can digest waxes in berries such as bayberries, helping them winter farther north than many other warblers.

No species-specific cultural attribution is possible from this uncertain identification. In the United States, possession of most native wild-bird feathers is regulated by the Migratory Bird Treaty Act.

Photograph both sides beside a ruler and record where it was found; compare the pattern with local birds and specialized feather references. Avoid collecting or keeping wild-bird feathers where regulations prohibit it.

No obvious breakage is visible; fine wear, bleaching, or damage cannot be assessed in this soft-focus image. Overall condition appears fair to good.