With 21 birds caught, it was a steady start to the summer season at HPP. However, the weather was good and our catch included several migrants. Chiffchaffs and Blackcaps were singing everywhere, though strangely we caught none of the latter. We did catch 3 Chiffchaffs though including a retrap from last year. We also trapped a single Willow Warbler, though there were far fewer of these about. Can you tell which is which? It's not too difficult in spring.