Counter for birds and rabbits. Used with the reading いちわ. The counter 羽 (わ) is specifically for birds and rabbits; other animals use different counters.
See also: 羽根
There is one sparrow in the garden.
彼は一羽のウサギを飼っている。
He keeps one rabbit.
Standard kanji spelling for counting birds and rabbits.
Numerical variant; common in horizontal writing and informal contexts.
Compound of 一 (いち, 'one') and the counter 羽 (わ, 'feather'), used for counting birds and rabbits.