In his weekly Wensum feature, Jim Harding discusses the arrival of summer and horse racing… This may be anything but fresh news now but I can’t resist including you in my experiences of a recent riverside walk just on the cusp of May. I stood on the three brick arches bridge overlooking the Wensum and was clearly serenaded by my first hearing of a cuckoo. Further up the river, I spotted a pair of mallards in charge of their lively brood of tiny ducklings which I carefully counted as numbering 13. Lucky for some. Overhead, to complete the three sights and sounds, I was delighted to see a couple…