Like a passenger pigeon? (7)

I believe the answer is:
extinct
(Other definitions for extinct that I've seen before include "No longer erupting" , "Ended" , "Defunct" , "No linger in existence" , "Having died out, animal species or volcano" .)
I believe the answer is:
extinct
(Other definitions for extinct that I've seen before include "No longer erupting" , "Ended" , "Defunct" , "No linger in existence" , "Having died out, animal species or volcano" .)