But more about yesterdays watching which was incredibly interesting. The chicks are doing really well, I peered in to the nest which wasn't too hard because the opening has become larger due to constant use and the male's habit of hanging on as he feeds his chicks. I could see them really well and also noted that, at 5 days old they have trebled in size already. Feeding by the parents is none stop and at times both birds were back and forth in less than a minute, constantly feeding the obviously voracious youngsters. The female left-off from brooding and hunted for prey right in front of the nest, taking just seconds to find prey which she delivered, flopped back caught more and then delivered that morsel about three times in a minute. The male however seems to spend comparatively longer catching food and when he comes back to the nest he is usually carrying larger insects such as mayfly. Yesterday I saw him catch a small fish which he dealt with, Kingfisher-like, beating it to death, he didn't bring that to the nest but flew opposite to eat it himself, incredible that he could make the judgement that it was too large and not suitable for the nestlings. There seemed to be an uneasy relationship between the parent birds, at one point they displayed to each other and then tumbled in to the water rolling around as though fighting but is more likely to be a precursor to mating?