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uropygium

Syllabification: u·ro·pyg·i·um
Pronunciation: /ˌyo͝orəˈpijēəm
 
/

Definition of uropygium in English:

noun

Zoology
The rump of a bird, supporting the tail feathers.
Example sentences
  • The extent of white also on the uropygium varies much in individual examples, sometimes spreading down to the thighs.
  • The nape, shoulder, and upper surface of wings are also thickly strewn with white feathers; back and uropygium have likewise many white patches, but getting fewer towards the latter portion.

Origin

late 18th century: via medieval Latin from Greek ouropugion.

Derivatives

uropygial

1
adjective
Example sentences
  • They use their bills to coat their feathers with oil from the uropygial gland.
  • Ovenbirds give off a unique musty odor that is thought to come from the oil in the uropygial gland.
  • The purpose of the current study was to test the importance of preen oil in Rock Doves by removing the uropygial gland and quantifying plumage condition over a period of several months.

Definition of uropygium in:

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