Translation

auru means "Owl" in English.
It's a katakanization, a loan-word.

auru is normally written with katakana, as アウル.
auru written with hiragana is あうる.
auru does not have kanji.
Romaji a u ru
Katakanaアウル
Hiraganaあうる

Further Reading

Wikipedia: 梟 (Owl)