Assertion: blue jay's throat | /r/HasProperty | expandable
Facets:
Source sentences:
text: On each trip, the blue jays fill their expandable throats, and then usually add one more acorn by holding it in their beak.
text: One blue jay made an effort to stuff a peanut into its expandable throat, as it does with acorns.
text: On each trip, the blue jays fill their expandable throats, and then usually add one more acorn by holding it in their beak.