Assertion: stork's migration | /r/Desires | behavioural changes
Facets:
value: sometimes
type: TEMPORAL
value: apart from physiological adaptations
type: OTHER
value: such as flying in flocks
type: OTHER
Source sentences:
text: Apart from physiological adaptations, migration sometimes requires behavioural changes such as flying in flocks to reduce the energy used in migration or the risk of predation.