Hi tenner10. I hunt in Michigan. So, I don't know anything about grizzlies. Except to stay out of their way. Also, we can't hunt bears in spring.
With all that in mind. I think, if you have enough time. I'd start a couple more bait stations in other areas. Also, the more cover they have, the earlier they'll come to your bait. Thats based on our experience here in Mi.
Otherwise, I think the crows are sort of free advertising. Keep a variety of baits, and limit your scent as much as possible.
Good hunting!