Assertion: budgie | /r/HasAspect | tetrachromatic colour vision
Facets:
value: like many birds
type: OTHER
Source sentences:
text: Budgerigars have tetrachromatic colour vision, although all four classes of cone cells will not operate simultaneously unless under sunlight or a UV lamp.
text: Like many birds, budgerigars have tetrachromatic colour vision, but all four classes of cone cells operating simultaneously requires the full spectrum provided by sunlight.