He spent a lot of time flying. He learnt to communicate with birds and discovered that their conversation was fantastically boring. It was all to do with wind speed, wing spans, power-to-weight ratios and a fair bit about berries. Unfortunately, he discovered, once you have learnt birdspeak you quickly come to realize that the air is full of it the whole time, just inane bird chatter. There is no getting away from it.
