In the Fall bull moose travel incredible distances, presumably looking for a cow. In about 1990 a bull moose hung out around the town of Blaine, WA. It made the local news and I saw his tracks by the football field.
A friend who grew up on a farm in the lower Skagit Valley said that twice over the years they had a bull moose in their pasture.
Maybe they will eventually establish a resident population in Western WA. Moose have been extending their range southward for the past 80 years or so. (A factor is apparently logging which opens much more browse.) Old timers in the Canadian Okanagan Valley said that there were zero moose there in the 1950s, but now there are enough that the area has a general open season for moose.