Answer:
口 KOU, kuchi - Mouth
一+ツ+夫 ICHI, ITSU, hito(tsu) - One / katakana "tsu" / FU, FUU, otto - husband
甲 KOU, KAN - first in a series, high voice
山 SAN, yama - Mountain
就 SHUU, JU, tsu(ku) - take a seat, engage, employ
Add 鳥 (CHOU, tori - bird) to give new characters.
鳴 MEI, na(ku), na(ru)(rasu) - cry, sing, howl, ring
鶏 KEI, niwatori - chicken, hen, rooster
鴨 YOU, kamo, ahiru - duck
嶌 TOU, shima - island
鷲 SHUU, washi - condor, vulture