After being on eastern and central Washington ventures, I wondered in the snow Geese had left the Skagit and Samish flats for their breeding grounds on Wrangel Island in the Russian Arctic. The question was readily answered as the main flock flew over me while I traversed the flats.
Apparently the leave date varies for these birds (Stevick, 2017). A later leave date may present problems as the flock may do a heavy graze on fields that have been planted. In this case the field has not yet been planted and the field that the flock was leaving is a Fish and Wildlife holding.