Assertion: woodpecker's eyelid | /r/CapableOf | sustain visibility
Facets:
Source sentences:
text: As an alternative, they have got a translucent third eyelid (referred to as a nictitating membrane), which might be drawn throughout the attention for defense, whereas sustaining visibility.
text: Instead, they have a translucent third eyelid (called a nictitating membrane), which can be drawn across the eye for protection, while maintaining visibility.