Before the other two have even touched down, Billy has done a stiff-legged reconnaissance strut around the squirrels and is trying to figure out how to stuff three seeds into his ebony, one-seed beak.
(the other two; have even touched down; ) (Billy; has done; a stiff-legged reconnaissance strut; T:Before the other two have even touched down) (Billy; is trying; to figure out how to stuff three seeds into his ebony)
the other two Billy Billy
have even touched down has done is trying
a stiff-legged reconnaissance strut T:Before the other two have even touched down
to figure out how to stuff three seeds into his ebony