I love watching the changes in the seasons. Spring, with all the new growth. May, the arrival of my favourite seasonal bird, the swift. For the last 3 months the swifts have been out every time I have left for my morning run, screeching overhead. Last weekend, they were in an absolute frenzy as they fed up ready for their journey. But they have now left for Africa. Tomorrow's walk to Parkrun will be the first time this summer that they won't be there to greet me. It marks the slow movement towards autumn, shorter days, cooler running temperatures.