Definition of preen gland in English:

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preen gland

noun

Ornithology
A gland at the base of a bird’s tail, which produces the oil used in preening.
Example sentences
  • However, perhaps the plumage of birds with preen glands is more resilient to abrasion from preening.
  • Our results provide the first rigorous evidence that the preen gland is important for plumage condition in birds other than waterfowl.
  • More work is needed on the function and distribution of preen glands in Rock Doves and across other species of birds.

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