Avian is not often used as a baby girl name. It is not in the top 1000 names. In 2018, among the family of girl names directly related to Avian, Ava was the most commonly used.
Baby names that sound like Avian include Abian, Ebanee, Ebanie, Ebany, Ebonie (English), Ebonyi, Evian, Evzenie (Czech), Epifanie, Epifany, Ebban, Ebonye, Evan (English and Greek), Evchen (German), and Evon (English and French).
† approx English pronunciation for Avian: EY as in "ate (EY.T)" ; V as in "vow (V.AW)" ; IY as in "eat (IY.T)" ; AH as in "mud (M.AH.D)" ; N as in "knee (N.IY)"