If you know a patch of water where kingfishers are known, get yourself down there on a dry day that isn't windy. Don't bother with binoculars but sit somewhere and keep fairly still and focus on the middle distance with that relaxed feeling you get after making love. Kingfishers sit on quite low branches when they're in fishing mode and make sudden dives when they spot a fish, then back up to the bush. They also dart across the water in very straight lines very low down, very characteristic. In both cases you'll see that unmistakable flash of electric blue. If you're lucky you'll see where they land, then you can get a good view through your bins. They won't let you get too close but they're middlingly bold with people. All this is based on my many experiences of seeing them on Bude canal. I had to simulate the love-making bit in my head. I'm thinking of having it lowered.