Assertion: flamingo's chick | /r/HasProperty | two weeks old
Facets:
Source sentences:
text: When chicks are two weeks old, they congregate in groups or crèches, making them less vulnerable to predators.
text: Once the chicks are two weeks old, they will begin to form groups with the other flamingo chicks, called “microcrèches.
text: They congregate in groups or crèches when the chicks are two weeks old, making them less vulnerable to predators.