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Qu'est-ce (qui) est uropygial gland - définition
Uropygial gland
![Blue Jay]]](https://commons.wikimedia.org/wiki/Special:FilePath/Blue Jay anting, showing uropygial gland.jpg?width=200 "Blue Jay]]")
![[[Hoopoe]]s host symbiotic bacteria in their uropygial glands whose secretions act against feather-degrading bacteria.](https://commons.wikimedia.org/wiki/Special:FilePath/Common Hoopoe (Upapa epops) at Puri Im IMG 9204.jpg?width=200 "[[Hoopoe]]s host symbiotic bacteria in their uropygial glands whose secretions act against feather-degrading bacteria.")
![preening]]. The bird on the left is pushing its head towards its uropygial gland.](https://commons.wikimedia.org/wiki/Special:FilePath/Glande uropygienne.jpg?width=200 "preening]]. The bird on the left is pushing its head towards its uropygial gland.")
![[[White-winged crossbill]] (''Loxia leucoptera'') extracting preen oil from its uropygial gland.](https://commons.wikimedia.org/wiki/Special:FilePath/White-winged Crossbill Uropygial.JPG?width=200 "[[White-winged crossbill]] (''Loxia leucoptera'') extracting preen oil from its uropygial gland.")
GLAND
Preen gland; Preen oil; Preen Gland; The Preen Gland
The uropygial gland, informally known as the preen gland or the oil gland, is a bilobed sebaceous gland possessed by the majority of birds used to distribute the gland's oil through the plumage by means of preening. It is located dorsally at the base of the tail (between the fourth caudal vertebra and the pygostyle) and is greatly variable in both shape and size.
preen gland
GLAND
Preen gland; Preen oil; Preen Gland; The Preen Gland
¦ noun Ornithology a gland at the base of a bird's tail which produces the oil used in preening.
Cowper's gland
![glans]] of a human [[penis]]](https://commons.wikimedia.org/wiki/Special:FilePath/Pre cum 160717.jpg?width=200 "glans]] of a human [[penis]]")
SMALL EXOCRINE GLAND IN THE REPRODUCTIVE SYSTEM OF MANY MALE MAMMALS
Cowper's gland; Cowper's glands; Bulbourethral glands; Cowpers gland; Cowper gland; Cowpers' gland; Glandulæ bulbourethrales; Bulbo-urethral glands of Cowper; Bulbourethral; Bulbourethral glands of Cowper; Bulbo-urethral gland; Cowper's Gland; Glandulae bulbourethrales; Antiprostate; Cowper's Glands; Bulbo urethral glands
¦ noun Anatomy either of a pair of small glands at the base of the penis which secrete a constituent of seminal fluid.
Origin
C18: named after the English anatomist William Cowper.
