Translation

The Japanese word for "Swan" is hakuchou 白鳥.

Romaji ha ku cho u
Hiraganaちょ
Katakanaチョ
Kanji
Meaning White Bird
School Level 小1 小2

Loan-word

The word "Swan" katakanized would be suwan スワン.
Romaji su wa n
Katakana
Hiragana

Further Reading

Wikipedia: Swan (白鳥)