Assertion: osprey's eyesight | /r/HasProperty | keen
Facets:
value: very
type: DEGREE
Source sentences:
text: They have very keen eyesight and percevie light in the UV spectrum, making some fish with iridescent markings, like flounder, easy prey.
text: They have keen eyesight and look for fish while hovering about the water (from 30-130 feet).