The woodpecker that drills futilely at the metal gutters every morning is not adapting to the amount of sunlight at 6:50. Presumably the same bird, it has become as reliable as temple or church bells. Cloudiness or the change in the sunrise does not affect it. At 6:50 the woodpecker alerts the world to its presence and to the time of day – not aware that he has yet to break his fast drilling there.