I heard the beautiful song of a songbird in the park.

Observing birds is one of my hobbies.

This beautiful 'Kanaotori' has the same meaning as 'Etopirika'.

The penguin lives in Antarctica.

Shizuka is my best friend.

He is facing many difficulties due to gender identity disorder.

Gender discrimination is one of the social issues that needs to be resolved.

It's difficult to understand his real nature.

Rabbits are herbivorous animals.

Lions are carnivorous animals.