While the parakeet is a bird that many people wish they saw less of, the Kingfisher never fails to attract surprised delight. In the 19th Century, London’s waterways were places of pollution and waste. The Thames was declared ‘biologically dead’ as recently as the 1950s. Huge progress has been made since then and the Thames and its tributaries now support abundant life. Kingfishers can be found on the River Lea, the Crane and the Ravensborne, among others. Clear water is vital for Kingfishers to see the fish and invertebrates on which they feed. Very often, this small vibrant bird goes unnoticed in a busy city, but they are here, making use of our discarded shopping trollies as perches and even breeding in holes in our bridges.