ニワトリの赤く立派なトサカは性別や種類を見分けるときに役立っていると考えられている。

tbd

The cockerel's splendid red cockscomb is thought to play a part in determining gender and breed.

４月に孵化した雛も５ヶ月になった。身体の大きさは親鳥とほぼ同じ、オス鳥のとさかが少し小さいぐらいか。

tbd

The chicks hatched in April have also become 5 months old. Their bodies are about the same size as their parents, about the only difference is that the roosters have smaller crests than their father.