An update...
Huge vulture AI overhaul this week, which was kind of bug fixing, so not really new features.
Added: Sleeping to vultures and set home distance to sleeper sight range + 1.
Changed: Improved vulture return home, movement, turning, attacking and added attack relocation mode.
Added: Vulture circling mode.
Added: Vulture glide anim, which blends in/out depending on vertical motion and state.
Added: Vulture wander height check, so stays a nice random distance above terrain.
Added: Made vulture sight range long and added drifting toward closest visible player when in wander mode.
These changes makes vultures feel like a very dynamic enemy. Probably my favorite now, as they lazily drift toward you and wait for you to be injured and rapidly swoop down to rip your face off, aggressively chase you, pull up to find a new spot to pounce on you again and repeat. The variable movement rates look nicer, since flying up is a lot harder than down IRL.