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%ما هو (من)٪ 1 - تعريف
PART OF A BIRD
Pope's nose; Parson's Nose; Parsons nose; Popes nose; Sultans nose; Sultan's nose; Rectrical bulb; Rectrical bulbs; Rectricial bulbs; Rectricial bulb; Parson's nose; Uropygium; Uropygial; Uropyge; Pygostyles
![''[[Confuciusornis sanctus]]'' with "rod"-type pygostyle and the two central tail feathers](https://commons.wikimedia.org/wiki/Special:FilePath/Confuciusornis sanctus (2).jpg?width=200 "''[[Confuciusornis sanctus]]'' with \"rod\"-type pygostyle and the two central tail feathers")
![''[[Yixianornis grabaui]]'', one of the oldest known species with a pygostyle like that in living birds](https://commons.wikimedia.org/wiki/Special:FilePath/YixianornisGrabaui-PaleozoologicalMuseumOfChina-May23-08.jpg?width=200 "''[[Yixianornis grabaui]]'', one of the oldest known species with a pygostyle like that in living birds")
Uropygial
·adj Of or pertaining to the uropygium, or prominence at the base of the tail feathers, in birds.
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.
Pygostyle
·noun The plate of bone which forms the posterior end of the vertebral column in most birds; the plowshare bone; the vomer. It is formed by the union of a number of the last caudal vertebrae, and supports the uropigium.
ويكيبيديا
Pygostyle
Pygostyle describes a skeletal condition in which the final few caudal vertebrae are fused into a single ossification, supporting the tail feathers and musculature. In modern birds, the rectrices attach to these. The pygostyle is the main component of the uropygium, a structure colloquially known as the bishop's nose, parson's nose, pope's nose, or sultan's nose. This is the fleshy protuberance visible at the posterior end of a bird (most commonly a chicken or turkey) that has been dressed for cooking. It has a swollen appearance because it also contains the uropygial gland that produces preen oil.
