This riddle asks you to think of a home that is not a house or building.
A bird lives in a nest, and that nest serves as its home. But unlike a human house, a nest has no walls, hallway, or front door.
Answer: A bird’s nest.
The picture clue makes the intended answer even clearer. A nest provides shelter and a place for eggs and young birds, but it is completely open rather than entered through a door.


