Assertion: robin | /r/HasAspect | a number of calls
Facets:
Source sentences:
text: In addition to its song, the American robin has a number of calls used for communicating specific information, such as when a ground predator approaches and when a nest or another American robin is being directly threatened.
text: Robins have a huge variety of songs, calls and sounds that are used to communicate different messages.
text: In addition to its song, the American robin has a number of calls used for communicating specific information; for example both male and female use chirping or chucking to warn of the presence of a predator.