U1R1O1P3Y4G2I1U1M3
17 points
UROPYGIUM is validvalid
the hump from which a bird's tail feathers grow [n UROPYGIA, UROPYGIUMS]
the rump of a bird which supports the tail feathers [n UROPYGIUMS or UROPYGIA]
the hump from which a bird's tail feathers grow [n UROPYGIA, UROPYGIUMS]
the rump of a bird which supports the tail feathers [n UROPYGIUMS or UROPYGIA]