Assertion: toucan's bird | /r/HasProperty | observed placing bill
Facets:
value: under their wings
type: LOCATION
value: during sleep as a way
type: TEMPORAL
Source sentences:
text: Scientists recently established that the Toco Toucan uses its huge bill as a thermal regulator responsible for up to 60% of the bird’s heat loss and the birds have been observed placing the bills under their wings during sleep as a way to minimize heat loss.