I went down to Bar Brook and still with the nymph on took a couple more rainbows, including a real monster around 6lbs! The sun was shining and the wind down here was just a mild breeze, this was helping the mayfly to take flight quickly after hatching.
Whilst I was watching Adam I was watching mayfly hatching constantly. The timespan from starting to hatch to fully hatched dun was 10-15 seconds. I was searching the edges to try and get a photo of a nymph coming to the surface and hatching but all I could see was the nymph after the hatching process had started. Then more by luck than anything else I spotted a nymph in the margin wriggling to the surface so took some shots. These are the best of a bad bunch but the whole process as I said took 10-15 seconds max. I know it may sound a bit sad to non fishers but it was fascinating to watch!
We called it a day around 1800 as the temperature was dropping and the hatch had ceased. Adam finished with 5 fish and me with 6 rainbows and 4 browns. A good father and son day!