Ba-cawk!

Aarakocra were initially given longer lifespans in AD&D. Wasn't consistent across editions, either being comparable to humans (Fighters/Rogues starting at 14-15, Fighter/Rogues starting at 21, and Clerics starting at 30+5d6 years old), or similar to humans but with a younger adult state and earlier-but-longer venerable/old state into 160ish. It's funny how it's gone from that to "dead before they can become clerics."