This sound effect can be found on The Edge Edition Volume 1, which was made by The Hollywood Edge. The sound effect is made by a doctored song of a kookaburra. It's a lower quality version of Dolphin Chirps Vocal PE024601, which can be found on The Premiere Edition Volume 1. Links: https://soundeffects.fandom.com/wiki/Hollywoodedge,_Dolphins_Chirping_TE015902#Audio_Samples