Assertion: yellow wagtail | /r/CapableOf | return to their breeding grounds
Facets:
value: in early april
type: TEMPORAL
value: in late march
type: TEMPORAL
Source sentences:
text: Yellow wagtails return to their breeding grounds in late March or early April, when they form smaller flocks that later break up as pairs form to establish nesting territories that are vigorously defended by the male birds.