I went for a walk round the Reading University grounds by myself this afternoon. Zoe stayed at home with Liz. It had been a fairly cold grey day. After half an hour in the campus bookshop, I walked back towards the Foxhill entrance. The sun came out just as I was passing the weir at the north-western corner of the large lake, and I caught a glimpse of the red and irridescent blue of a kingfisher as it darted out from the north bank and flew off eastwards below the overhanging branches. A few seconds later it was followed by a grey wagtail (Motacilla cinerea). The person who named these birds chose to ignore their bright yellow fronts and instead concentrated on the upper part of their backs which is grey.