Assertion: robin's migration | /r/HasSubevent | massive movements
Facets:
value: through the eastern u.s.
type: LOCATION
Source sentences:
text: In autumn 2003, migration was displaced eastwards leading to massive movements through the eastern U.S., and presumably this is what led to no fewer than three American robins being found in Britain[citation needed], with two attempting to overwinter in 2003–2004, although one was taken by a sparrowhawk.