In Tune

There's an amazing amount of activity in one of the trees on the other side of the garden fence. The birds therein appear to be holding conference much of the day, but especially in the morning. And they love Messiaen - specifically his late work From The Canyons To The Stars. I suppose this is because it's stuffed full of birdsong, especially the piano part, of which there's a lot. The volume of the conference seems to double as soon as I play the piece. Perhaps they regard it as some sort of foreign competition, and feel they must out-do it?