Assertion: american toad's call | /r/CapableOf | become constant
Facets:
value: during mating season
type: TEMPORAL
Source sentences:
text: Their calls become frantic, loud, and constant during mating season.
text: Male American toads use this call to attract females, their calls becoming insistent, loud and frequent during mating season.
text: Their calls become frantic, loud, and constant during mating season.