| preen gland |
uropygial gland: oil-secreting gland situated at the base of the tail in most birds
출처: wordnet.princeton.edu/perl/webwn
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| preen gland |
This is a gland on the rump, that secretes oil used in preening the feathers.
출처: myweb.tiscali.co.uk/worldwidebirdsites/Glossary.ht...
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| preen gland |
Synonymous with "oil gland." See "Oil Gland."
출처: www.purplemartin.org/main/Terminology.html
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