Translation of "Loon" in Japanese

What's a loon?

あびって何？

Why is it called "loon"?

なぜルーンって呼ばれてるの？

Because there's a red-throated loon on the coin.

硬貨に「あび」がついてるからよ。

- Tom is a loon.
- Tom's crazy.
- Tom's insane.
- Tom's mad.
- Tom is crazy.
- Tom is demented.
- Tom is insane.
- Tom is mad.

- トムはクレイジーだ。
- トムはきちがいだ。