Assertion: blackbird's nest | /r/HasProperty | built in stands of thorny trees
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: The red-billed quelea needs 300–800 mm (12–31 in) of precipitation to breed, with nest building usually commencing four to nine weeks after the onset of the rains.:5, 12 Nests are usually built in stands of thorny trees such as umbrella thorn acacia (Vachellia tortilis), blackthorn (Senegalia mellifera) and sicklebush (Dichrostachys cinerea), but sometimes in sugar cane fields or reeds.