A nest is a structure built by vertebrates to hold its eggs, its offspring, or occasionally the animal itself and may be composed of organic material such as twigs, grass, and leaves, or may be a simple depression in the ground, or a hole in a rock, tree, or building.
NEST | instanceof | CHICKEN NEST |
NEST | instanceof | BIRD NEST |
CHICKEN NEST | isa | NEST |
BIRD NEST | isa | NEST |
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