EVENTS

Members Reports and Photos

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SATURDAY 17 AUGUST 2013

NORTH BULL ISLAND

BUTTERFLIES

LEADERS: FRANK SMYTH & BOB ALDWELL

A group of seven DNFC members led by Frank Smyth and Bob Aldwell took part in rather breezy but mostly dry conditions with a temperature of about 20 degrees. The main objective was to visit the Marsh Fritillary population on the island. The larvae were very plentiful and most were readily visible and actively feeding. Concentrations of up to a dozen clusters were seen at six favoured sites with  many others spread widely through the area with plentiful Devil's-bit Scabious Succisa pratensis. Most were at the brown web stage with some still at the earlier brown leaf stage and a small number already at the later white web stage. An estimate of at least 200 clusters was seen and with a generalised number of 100 larvae per cluster a rough total of 20,000 larvae was reached. No attempt was made to survey the whole area with suitable habitat and it may be assumed that many more would have been found. An attempt to locate Grayling, at the area where they are usually present, was unsuccessful but by then a southerly gale was blowing which was unfavourable for seeing Grayling. At least 60 CB and MB were also recorded as well as 5 SH.
BA              

        

    

       Frank Smyth

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