You know, the bird call thing is a happy accident. The real idea I had was to just add something sparkly with a large registral span to maybe evoke a body of water like a river or a lake while remaining in an RPG-y atmospheric aesthetic. I thought it was also a nice constrast to the shaker sounds that precede it.
Also, wanted to say thank you for listening to my piece, but also for actively listening to others' pieces. I love that you're always in the comments, being positive and giving helpful advice to myself and the others! You clearly care a lot about giving this feedback and I'm sure it is appreciated by everyone here.