Suffolk Argus 38 Summer 2006

Page 11

Summer2006

The Suffolk Argus Monitored Silver-studded

Blue sites listed geographically

Location

North GridReference Date 74 TM4074 BlackheathWenhaston TM420749 Jui TM4874 WalberswickComm'NNR TM491752 29-Jun 72 TM4472 70 TM4670 AldrinQhamWalks TM464612 1-Jul 68 TM4468 WestletonHeathNNR TM4569 29-Jun WestletonCommon TM44306870 3-Jul WestletonFootballPitch TM44406880 3-Jul MinsmereWestletonWalks TM459689 MinsmereSawmills TM452692 MinsmereFootballPitch TM451691 MinsmereNatteriackPond TM451693 MinsmereSW Como' 1 TM450694 MinsmerePit Como'2 TM457692 MinsmereSEComo'3 TM457691 MinsmereComo'20 N TM446683 MinsmereS Como'3 TM456693 MinsmereCentralComo' 3 TM453693 TM4668 MinsmerePowerlines TM461683 MinsmereNorth Bridlewav TM468687 MinsmerePotbrioos TM468689 20-Jun MinsmereNorth Grimstones TM462688 20-Jun MinsmereE Como' 13 TM468681 MinsmereComo' 13 track TM464681 MinsmereComo' 13 Tanktrao TM466683 DunwichHeath TM468687 1&03 Jui 66 TM4466 Como'20 South TM445670 GravelPit TM449669 46 TM3246 UpperHolleslevMoD TM33344723 11-Jul TM3446 "Lower Holleslev""A""" TM342465 2-Jul "Lower Holleslev""8""" TM343461 2-Jul "Lower Holleslev""C""" TM350460 28-Jun 44 TM2044 RushmereHeath TM202448 14-Jul TM2244 MartleshamHeath TM2445 10-Jul TM3244 ParsnioPlantation TM32724579 11-Jul 42 TM2042 "Ipswich Golf Club,Purdis" TM208432 Jui PurdisHeath TM21204270 6-Jul 40 TM2040 IndustrialEstate TM207419 6-Jul

10

from the North

Observer

RichardHavard Adam Burrows

Male

1

Female Total

0

1

26

10

36

Rob Macklin

179

38

217

Adam Burrows DavidRous DavidRous

137 175 25

39 77 15

176 252 40 0 0 0

0 0 0 0 0 0 0

Mel Kemo Mel Kemo

DavidSutton

47 368

0 37

1

1

0 0 47 405 0 0 0 2 0 0

DavidMason

159

33

192

RichardStewart RichardStewart DavidMason

325 244 22

142 91 2

467 335 24

8

2

10

not split

377

17

1

18

0 6

0 0

0 6

RichardStewart 47 1787 2005 Totals

20 508

67 2672

DavidMason Phil Smith DavidMason Neil Sherman RichardStewart

appears to be holding its own in a very limited area of the Suffolk Brecks, covered by just 5 tetrads.

Dingy Skipper Survey, 2005

2005 SURVEY The Dingy Skipper was on the wing from late April elsewhere in UK, and on the Devil's Dyke (Cambs/Suffolk border) by May 2nd, but the Brecks population was again later. None were flying on May 6th, and the first definite record was from Wardwell on May 14th. The cool wet spell at the start of May had the effect of extending the flight period. This finished at Devil's Dyke by June 8th {last sighting May 28th), yet they were still present in King's Forest on June 18th. The survey involved 19 participants, and the main events were:

by Rob Parker SUMMARY

The 2005 survey continued the intensive study of 2004, refining our knowledge of the extent of the Dingy Skipper's distribution. The newly found colony in the Archery area of King's Forest was found to be flourishing, with a peak count of 115, and an expanded-flight area. On the other hand, the established colony at RAF Apr 29th - Training at Barnham (Spring Survey Barnham had a very poor showing, with just one Event). Dingy Skipper seen in rwo separate visits. This abrupt change is probably related to the recently introduced sheep grazing regime, and needs . May 12th - Survey along Cut-off Channel in Lakenheath area. careful management, if the colony is to survive. Continued checks of former sites did not reveal any unexpected records, and there were only· May 14th - Counts at Wardwell & Archery area, but nothing found at Chalk Lane or to the north a few sightings in the Chalk Lane areas. east. A number of possible sites in peripheral areas were investigated this year, notably along the CutMay 18th - Count at Center Pares, repeated by off Channel, where no Dingy Skippers were staff on Ma!J27th. found, although the banks of the same waterway do hold good populations just a few miles into· May 23rd - RAF Barnham survey - negative, Norfolk. Tlie population on the Devil's Dyke repeated Jun 3rd - only one seen. remains strong, although this lies just outside VC26, i.e. in Cambridgeshire's recording area. May 24-25th - Surveys at Thetford rifle range The very promising site at the Thetford Rifle Range was inspected, but no Dingy Skippers were May 25th - Chalk Lane; 2 seen. found despite the apparently suitable habitat. The season was again later in the Brecks than May 30th - King's Forest; one seen west of road in Cambs, and this was exaggerated by the cold (first since Millennium survey). wet spell in early May. The flight period became rather extended, and some Dingy Skippers were May 6-30th - Negative searches made at Euston, still flying in King's Forest on June 18th. Sketchfar, Marmansgrave, Barnhamcross, Berners All visits were conducted with the Heath, also Shepherd's Grove and Haverhill etc. landowner's consent, or along public rights of way. A grant from Awards for All enabled volunteers to A total of 17 sites were visited during the 2005 be reimbursed for mileage undertaken during the flight period. Dingy Skippers were found only at survey. The sites visited are listed individually the established sites, including an isolated, but below, as active, defunct or for future investigation. stable colony at Center Pares. The butterfly

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