From the Super Mario Wiki
Vampire Heyho are enemies in Yoshi's Crafted World. They are Shy Guys dressed in black suits and red capes. They appear only in the level Haunted Maker Mansion, in the outside portion. They swoop toward Yoshi, hurting him if he runs into them. Despite this, they act as regular Shy Guys upon landing and can be defeated with any method. Yoshi can also eat them to get eggs.