File:YoshiHelicopter.gif
Yoshi Helicopter.
File:Yoshis-island-ds-20061109051331930.jpg
The morph bubble in Yoshi's Island DS
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An Orange Yoshi after getting the morph bubble.
A Yoshi Helicopter (sometimes known as the Yoshi-Copter) was a form Yoshi could become in Super Mario World 2: Yoshi's Island. Yoshi had to touch a Morph Bubble with a helicopter inside of it to become this.
In this from Yoshi could fly around the level for a short time. The form returned in Yoshi's Island DS.
In Mario Kart: Double Dash, a Yoshi Helicopter appeared in Baby Park and Yoshi Circuit, however it was not a form, it was an actual vehicle.