A more thorough explanation:

FRUCTUS NATURALES

Fructus naturales are natural fruits that come from the land, plants, or animals. They are considered part of the real property.

• Fruits and nuts from trees
• Wild berries and mushrooms
• Honey from bees
• Eggs from chickens

These examples illustrate fructus naturales because they are all natural products that come from the land or animals. They are not created by human labor or intervention, and are therefore considered part of the real property.