Invasion
Invasion Description
None
Geographic Extent
Everett/WA/Puget Sound (1968, non-reproducing migrants, Pietsch and Orr 2015); Brtish Columbia/Barkley Sound; (Clemens and Wilby 1962; Pietsch and Orr 2015); Port San Juan/British Columbia (1971; Pietsch and Orr 2015)
Vectors
Level | Vector |
---|---|
Probable | Natural Dispersal |