Assertion: butterfly's population | /r/AtLocation | overwintering mexican sites
Facets:
Source sentences:
text: The western North American population of monarchs west of the Rocky Mountains often migrates to sites in southern California but has been found in overwintering Mexican sites as well.
text: The western North American population of monarchs west of the Rocky Mountains often migrates to sites in southern California but has been found in overwintering Mexican sites as well.