Assertion: condor's head | /r/HasAspect | few feathers
Facets:
value: as an adaptation for hygiene
type: PURPOSE
value: like most condors
type: OTHER
value: like vultures
type: OTHER
Source sentences:
text: The head and neck, kept meticulously clean, are red to blackish-red, and have few feathers.  
text: Like most condors and vultures, their head has no feathers, making it easier to clean.
text: The head and neck are red to blackish-red and have few feathers.
text: As an adaptation for hygiene, the head and neck have few feathers, exposing the skin to the sterilizing effects of dehydration and ultraviolet light at high altitudes, and are meticulously kept clean by the bird.