Worcestershire Record No. 24 April 2008 pp. 31-33
John Tilt
I have now collated the 2007 transect results and sent them off to Head Office to be included in the UK Butterfly Monitoring Scheme. A group of experts will then do some analysis to give population trends. I have included some of 2006 results to show some national trends. So how did we do in the West Midlands? 28 Transects were walked – most of these over 26 weeks from 1st April to 30th September. I estimate something over 1000 man hours of work. On top of the recording the results are keyed into the Transect Walker Software and sent to head office. So a big thank you to all those who have taken part. 31 species of butterfly were observed on the transects and over 2000 butterflies counted. Table 1 shows how 2007 compares with 2006. To compile this table I have:
Selected the transects which were done in both years | |
Adjusted the counts to allow for missed weeks (holidays etc) | |
Then calculated the % loss and gains from 2006. |
Table 1 - Sum of Adjusted Total | |||
2006 | 2007 | % change | |
Meadow Brown | 6571 | 5409 | -17.68 |
Ringlet | 4897 | 3747 | -23.48 |
Gatekeeper | 4895 | 2207 | -54.90 |
Peacock | 879 | 2014 | 129.13 |
Green-veined White | 1028 | 1370 | 33.20 |
Speckled Wood | 1709 | 1160 | -32.10 |
Wood White | 875 | 949 | 8.49 |
Small White | 1625 | 938 | -42.31 |
Marbled White | 960 | 653 | -32.05 |
Large White | 835 | 593 | -29.01 |
Brimstone | 555 | 499 | -10.17 |
Small Tortoiseshell | 430 | 474 | 10.22 |
Small/Essex Skipper | 453 | 457 | 0.99 |
Large Skipper | 484 | 432 | -10.61 |
Silver-washed Fritillary | 381 | 409 | 7.51 |
Orange-tip | 429 | 409 | -4.83 |
Red Admiral | 471 | 407 | -13.58 |
Small Skipper | 427 | 360 | -15.71 |
Comma | 573 | 303 | -47.08 |
Common Blue | 797 | 184 | -76.89 |
Pearl-bordered Fritillary | 109 | 128 | 17.38 |
Small Copper | 319 | 124 | -61.22 |
Large Heath | 190 | 122 | -35.79 |
Holly Blue | 52 | 116 | 123.67 |
White Admiral | 228 | 106 | -53.51 |
Small Heath | 165 | 59 | -64.02 |
Painted Lady | 392 | 51 | -87.09 |
Green Hairstreak | 32 | 33 | 3.16 |
Small Pearl-bordered Frit | 17 | 23 | 35.94 |
Brown Argus | 48 | 22 | -53.27 |
Purple Hairstreak | 109 | 19 | -82.66 |
Grizzled Skipper | 16 | 17 | 7.09 |
Essex Skipper | 22 | 12 | -43.57 |
Dingy Skipper | 6 | 10 | 58.70 |
White-letter Hairstreak | 13 | 9 | -36.46 |
Dark Green Fritillary | 18 | 7 | -57.73 |
Brown Hairstreak | 10 | 2 | -83.38 |
Clouded Yellow | 34 | 1 | -96.78 |
Wall | 124 | 1 | -99.15 |
Grayling | 1 | -100.00 | |
Grand Total | 31178 | 23838 | -23.54 |
Sites |
BLACKMINSTER |
CASTLEMORTON COMMON |
CHADDESLEY WOOD NEW |
CHASE_END HILL |
COPPETT HILL. |
DOLEY COMMON |
EWYAS HAROLD COMMON |
GRAFTON WOOD |
HAUGH_WOOD_SOUTH |
HONEYBOURNE |
KNAPP AND PAPERMILL |
MONKWOOD |
OLD HILLS REVISED |
ST WULSTANS LNR |
TEDSMERE |
TITTERELLS |
WEST MALVERN |
WESTHOPE |
WHIXALL FENNS MOSSES |
WIGMORE ROLLS |
WINDMILL HILL |
WYRE FOREST EAST |
Table 2 National Results | 2005 all-sites index | 2006 all-sites index | % change down | % change up |
Small / Essex Skipper | 73 | 45 | 38 | |
Silver-Spotted Skipper | 313 | 305 | 3 | |
Large Skipper | 72 | 76 | 6 | |
Dingy Skipper | 92 | 69 | 25 | |
Grizzled Skipper | 86 | 61 | 29 | |
Clouded Yellow | 452 | 1890 | 318 | |
Wood White | 64 | 18 | 72 | |
Brimstone | 118 | 129 | 10 | |
Large. White | 108 | 88 | 19 | |
Small White | 81 | 93 | 14 | |
Green-veined White | 90 | 62 | 31 | |
Orange tip | 108 | 85 | 22 | |
Green Hairstreak. | 98 | 81 | 18 | |
Purple Hairstreak | 109 | 61 | 45 | |
White-letter Hairstreak | 58 | 38 | 36 | |
Brown Hairstreak | 282 | 137 | 51 | |
Small Copper | 75 | 111 | 47 | |
Small Blue | 135 | 110 | 19 | |
Silver-studded Blue | 83 | 137 | 64 | |
Brown Argus | 122 | 157 | 29 | |
Northern Brown Argus | 57 | 58 | 2 | |
Common Blue | 103 | 127 | 23 | |
Chalkhill Blue | 144 | 163 | 13 | |
Adonis Blue | 255 | 252 | 1 | |
Holly Blue | 195 | 137 | 30 | |
Duke of Burgundy | 68 | 68 | 0 | |
White Admiral | 82 | 132 | 60 | |
Purple Emperor | 201 | 179 | 11 | |
Red Admiral | 163 | 239 | 47 | |
Painted Lady | 49 | 618 | 1153 | |
Small Tortoiseshell | 45 | 33 | 26 | |
Peacock | 92 | 78 | 15 | |
Comma | 172 | 210 | 22 | |
Small Pearl-bordered | 81 | 70 | 13 | |
Pearl-bordered Fritillary | 72 | 44 | 39 | |
High Brown Fritillary | 41 | 37 | 11 | |
Dark Green Fritillary | 194 | 274 | 42 | |
Silver-washed Fritillary | 158 | 303 | 92 | |
Marsh Fritillary | 135 | 235 | 74 | |
Heath Fritillary | 31 | 122 | 293 | |
Speckled Wood | 147 | 137 | 7 | |
Wall Brown | 66 | 42 | 36 | |
Scotch Argus | 110 | 78 | 29 | |
Marbled White | 102 | 151 | 48 | |
Grayling | 83 | 94 | 13 | |
Gatekeeper | 118 | 89 | 24 | |
Meadow Brown | 120 | 104 | 14 | |
Large Heath | 196 | 206 | 5 | |
Small Heath | 99 | 86 | 13 | |
Ringlet | 136 | 139 | 2 |
Table 3 Sites monitored for BAP species | |||||||
Species | Data | 2003 | 2004 | 2005 | 2006 | 2007 | Grand Total |
Brown Argus | Sum of total | 7 | 4 | 16 | 42 | 14 | 83 |
Count of site | 3 | 4 | 4 | 4 | 3 | 18 | |
Brown Hairstreak | Sum of total | 2 | 5 | 7 | 9 | 1 | 24 |
Count of site | 1 | 1 | 1 | 1 | 1 | 5 | |
Dark Green Fritillary | Sum of total | 2 | 17 | 7 | 26 | ||
Count of site | 2 | 2 | 3 | 7 | |||
Dingy Skipper | Sum of total | 1 | 15 | 10 | 5 | 10 | 41 |
Count of site | 1 | 2 | 2 | 2 | 3 | 10 | |
Grayling | Sum of total | 1 | 6 | 7 | |||
Count of site | 1 | 1 | 2 | ||||
Green Hairstreak | Sum of total | 5 | 6 | 12 | 26 | 24 | 73 |
Count of site | 3 | 3 | 2 | 4 | 6 | 18 | |
Grizzled Skipper | Sum of total | 11 | 16 | 17 | 14 | 17 | 75 |
Count of site | 2 | 3 | 2 | 2 | 2 | 11 | |
Large Heath | Sum of total | 190 | 122 | 312 | |||
Count of site | 1 | 1 | 2 | ||||
Pearl-bordered Fritillary | Sum of total | 104 | 106 | 174 | 87 | 106 | 577 |
Count of site | 4 | 4 | 5 | 5 | 5 | 23 | |
Silver-washed Fritillary | Sum of total | 152 | 228 | 227 | 350 | 307 | 1264 |
Count of site | 6 | 6 | 8 | 11 | 10 | 41 | |
Small Heath | Sum of total | 84 | 117 | 120 | 156 | 59 | 536 |
Count of site | 9 | 6 | 8 | 7 | 8 | 38 | |
Small Pearl-bordered Frit | Sum of total | 27 | 14 | 27 | 17 | 17 | 102 |
Count of site | 3 | 2 | 3 | 2 | 3 | 13 | |
Wall | Sum of total | 3 | 84 | 3 | 61 | 1 | 152 |
Count of site | 2 | 2 | 3 | 5 | 1 | 13 | |
White Admiral | Sum of total | 90 | 134 | 179 | 222 | 93 | 718 |
Count of site | 3 | 5 | 7 | 8 | 8 | 31 | |
White-letter Hairstreak | Sum of total | 3 | 1 | 10 | 7 | 21 | |
Count of site | 1 | 1 | 4 | 2 | 8 | ||
Wood White | Sum of total | 431 | 691 | 742 | 581 | 763 | 3208 |
Count of site | 3 | 4 | 3 | 3 | 5 | 18 | |
Total Sum of total | 920 | 1422 | 1535 | 1788 | 1554 | 7219 | |
Total Count of site | 41 | 44 | 49 | 62 | 62 | 258 |
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