The uropygial gland is situated at the base of the tail and helps birds such as the Great Black-backed Gull maintain its plumage in good condition.

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The uropygial gland is situated at the base of the tail and helps birds such as the Great Black-backed Gull maintain its plumage in good condition. this oily secretion helps waterproof feathers

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Size: 6000px × 4324px
Location: Scarborough, UK
Photo credit: © Nick Greaves / Alamy / Afripics
License: Licensed
Model Released: No

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