From the Super Mario Wiki
Shrooms appear in Fungi Forest during the day and are replaced with Koshas at night. Shrooms have a similar attack to Klobbers, as they initially wait in the ground, taking on the appearance of a normal mushroom. However, when a Kong approaches a Shroom, it jumps up and reveals itself. Shrooms try to attack the active Kong by moving after them, attempting to ram the Kong with its mushroom head. Shrooms are weak enemies, and they only get defeated from one hit. A Shroom can also be defeated from afar while under its mushroom disguise if the Kong blasts it with their personal weapon or by throwing an orange.
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