Vent feather

(Zool.) one of the anal, or crissal, feathers of a bird.

See also: Vent

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
With their heavy feathering, Cochins sometimes need a vent feather trimming before the breeding season.
The homestead chicken
The consequence of the reduced cloacal sphincter function was persistent soiled vent feathers that the owner cleaned daily.
What is your diagnosis?
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