There aren't supposed to be any buzzards... Aren't Birds and Cats extinct in FO1 & 2?
Then, why there's vultures hovering over Megaton in FO3? :huh:
If it's extincted in the West Coast, it may have not been extinct in the East Coast..... Things in the East Coast must be different than in the West Coast.
Proof? Look at Megaton. You'll see some vultures hovering above the town, circling :mellow: . And Fallout 3 is a canon successor of Fallout 1, and 2. :grad:
The only one thing i hate about Fallout lore is, WHY CATS MUST BE EXTINCT IN AMERICA!! :banghead: :swear:

(In My Opinion..)
It's unfair, and every animal can adapt and survive with it's environment. Though, maybe their bigger cousins (Pumas) maybe still alive......