While fishing the rising river yesterday at Keithall, I noticed a small localised hatch of Mayflies, maybe 20-30 in total within a few minutes. I think they’re Green Drakes but you maybe able to clarify. The trout didn’t seem that interested.
In this theme, Several volunteers, including Fred Hay and myself have been trained by the Riverfly Partnership and we monitor the health of the River Don fly life population at 2 sites around Inverurie. This is done on a monthly basis to establish water quality and any dip in a particular invertebrate species may indicate an issue. We are finding an abundance of Shrimp, cased and caseless Caddis, flat bodied stoneclingers, olives and blue winged olives. We have had some massive Stonefly nymphs too but we haven’t found any Mayfly nymphs suggesting that they like particular substrate.
Anyway, I’m fast becoming an insect anorak and if you would like to be involved in this monthly exercise, don’t hesitate to contact me and I will put you in touch with the coordinator for this area.