Assertion: vampire bat's adaptation | /r/CapableOf | reduce area
Facets:
value: for the upstroke
type: PURPOSE
value: for gliding
type: PURPOSE
value: radically
type: MANNER
Source sentences:
text: This adaptation does not permit bats to reduce their wingspans, unlike birds, which can partly fold their wings in flight, radically reducing the wing span and area for the upstroke and for gliding.