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uropygial glands |
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uropygial glands bilobed oil glands on either side of the pygostyle of many birds which aid in waterproofing feathers. Some species, e.g pigeons and parrots, lack them. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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