Shiyuu

Shiyuu touta

Shiyuu shinkaron

Tamago no shiyuu kanbetsuhou

Jitsuyou sanji shiyuu kanbetsuhou

Tainai ni okeru shiyuu bunsei no genri oyobi ouyou

Peafowl

Soumoku shiyuuron

雄蝶と雌蝶

Peafowl

Peafowl

Kokusai shiyuuben

Ceramic Ornament, Cock and Hen

Plum Blossoms, Hen, and Rooster

知其雄守其雌

孔雀雄（体+羽）、雌

Plum Blossoms, Hen, and Rooster

夫婦石（雄石・雌石）

ehonoshiedori

ノダケ 雌性期 雄性期

Male cricket's behaviour like a female

ehonoshiedori

繭用雌雄鑑別器

Hatemezurashikifutatsunoutsuwa

種繭雌雄選別機