uropygium

n.posterior part of a bird's body from which the tail feathers grow

The Effects of Using Omega-3, Omega-6 Fatty Acid and Cholesterol Synthetic on Sperm quality, Testes and Uropygium size of Male Quail...
[Ectodermal & mesodermal interaction in the formation of invagination of the uropygium in birds]
Centroribates uropygium Grandjean
Dicatozetes uropygium (Grandjean, 1928)
COMPARISON OF EXCISION, SWABBING AND RINSING SAMPLING METHODS TO DETERMINE THE MICROBIOLOGICAL QUALITY OF BROILER CARCASSES
Wing beat kinematics of a nectar-feeding bat, Glossophaga soricina, flying at different flight speeds and Strouhal numbers
Myotis keaysi
New fossils from the Paleogene of central Libya illuminate the evolutionary history of endemic African anomaluroid rodents