opisska
rabid twitcher

You could get all 10 in a single late winter/early spring trip in Germany with Lammergeier being the only one not really consistent.
Depends on you definition of "get" as the German rarity committee, as far as I know, has recently removed Ural Owl from the list because of the reintroductions and doesn't consider it even cat. C. So you have to look at least a meter across the border to the Czech Republic, where they count