I think those listeners who listen to this movement can appreciate and will probably, fully understand all aspects of the components of the composition, arrangement and orchestration that you applied in the piece, if they (as you previously mentioned) somehow were resided in an alike surroundings and were inspired from that particular sonic atmosphere.

Every bird in such an environment can be considered as a composer and singer/performer of its own instinctive singing parts. The difficult task for you in here was that you well managed to compose, edit, arrange, combine and orchestrate approximately fifty distinctive melodic and rhythmic tunes with their own sonic-characteristic nature, put them together within adding your own compositional ideas, and logically relate them to each other in an organised directional-purposeful musical manner; and finally, translate them to be sensible and understandable for individual listeners in a Western music format.

It only does not seem an orchestrated version of the ambience of singing birds but, implies and illustrates their interactions, their sharp jumps and movements, their flight and the height/dimensions of their air travel.

This is I think a sophisticated piece which I had to hear it for several times to perceive it better and better. I guess by further listenings, I will discover more about this piece. A significant work of art.