Assertion: crane's flock | /r/CapableOf | spiral on rising warm air
Facets:
value: upwards
type: MANNER
Source sentences:
text: Thus, flocks spiral upwards on rising warm air until they emerge at the top, up to 1,200–1,500 m (3,900–4,900 ft) above the ground (though one record from Western Sudan observed an altitude of 3,300 m (10,800 ft)).