Thanks for the tips!
just implemented them in update. I've added some pitch variation and a bit of random delay for each sound, limited amount of sound using object pooling, added some music, and changed the pigeon-cry sound to be only fired when pigeon with bread if convinced to join the cult party
We went slightly off track with original idea of making bird version of old flash game "Love me", there was a plan for few levels and even rivals for pigeons affection, but we ran out of time 😅