Yes, turkeys do seem to use the same roosts year after year, BUT they don't use the same roost every night. I can show you roosts in the area I hunt that have been used for the last 15 years I've been hunting the area, but they may only use them occasionally. Meriams in particular are real wanderers and, at least as I've observed, they may use a roost 2-3 nights in a row and then not again for 2-3 weeks. There are birds in my area that definitely move up as spring progresses but some flocks stay in the same basic area all spring and summer. I think most do move up as the snow melts however and I know in some areas they move up about like the deer and elk do.