Translation

kakesu means "Jay" in English.

kakesu is normally written with katakana, as カケス.
kakesu written with hiragana is かけす.
kakesu written with kanji is 懸巣.
These are jouyou kanji 常用漢字, taught in junior high, chuugakkou 中学校.
Romaji ka ke su
Hiraganaかけす
Katakanaカケス
Kanji 懸 巣
Meaning Suspend Nest
School Level 中 小4

kakesu may also be written as 橿鳥 or 鵥.

Trivia

Further Reading

Wikipedia: 懸巣 (Eurasian_jay)