Dondon

The Dondon is a bird enemy that appears in Super Mario Land 2: 6 Golden Coins. Dondon slowly swoop down from the top of the screen before flying forward. It appears in the Tree Zone's final stage, as well as the sole Hippo stage. They are defeated through conventional means: a simple stomp on the head will subdue them.

Perfect Ban Mario Character Daijiten
''' ドンドン 種族 　フライ族 性格 　のんびり屋 登場 ゲーム　ランド2 ''' のんびりした鳥  右側からまっすぐ飛んでくる. 横から攻撃されるとダメージを受けるが、スピードが遅いので、恐くはない. しゃぼん玉に入っておけば、簡単に踏んづけけられるぞ.

 Dondon  Tribe: Fly clan Disposition: Easygoing person Game appearances: Land 2 ' Lazy bird ''It flies straight at you from the right side. If it attacks you from the side, you will take damage, but it is not scary because of its slow speed. If you stay in the bubble ball, you can easily step on it.''

Reference
Dondon