tail feathers
Refers specifically to the feathers of a bird's tail.
That bird has long, beautiful tail feathers.
尾 means tail in general, not limited to feathers.
Standard kanji spelling for tail feathers.
Rare variant spelling; 羽根 is more commonly read はね.
Compound of 尾 (o, 'tail') and 羽 (hane, 'feather'), with rendaku voicing of hane to bane.