Assertion: passenger pigeon | /r/CapableOf | feed young
Facets:
value: for three or four days
type: TEMPORAL
value: with crop milk
type: OTHER
Source sentences:
text: Passenger pigeons fed their young with crop milk for three or four days, and then abandoned their hatchlings a week or so later, at which point the newborn birds had to figure out (on their own) how to leave the nest and scavenge for their own food.