Lancashire, Manchester and Merseyside Butterfly and Moth Recording Report
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BUTTERFLY CONSERVATION LANCASHIRE BRANCH DEDICATED TO SAVING WILD BUTTERFLIES, MOTHS AND THEIR HABITATS Lancashire, Manchester and Merseyside Butterfly and Moth Recording Report 2017-2018 Butterfly Conservation President Sir David Attenborough Registerd Office Manor Yard, East Lulworth, Wareham, Dorset BH20 5QP Head Office Manor Yard, East Lulworth, Wareham, Dorset BH205QP Registered in England 2206468 Tel 0870 7744309 Fax 0870 7706150 Registered Charity No 254397 Email: [email protected] Ben Smart Butterfly Conservation Registered in England 2206468 Pete Marsh Registered Charity 254937 President Sir David Attenborough Laura Sivell Head Office Manor Yard, East Lulworth, Wareham, Dorset BH20 5QP 01929 400209 Richard Walker Butterfly Recording Laura Sivell County Butterfly Recorder Please continue to send your butterfly records (remember, every little helps)to: Lancashire and Merseyside Laura Sivell, email [email protected]. Or by post to 22 Beaumont Place, Lancaster LA1 2EY. Phone 01524 69248. Please note that for records to be included in the annual report, the deadline is the end of February. Late records will still be used for the database, but once the report is written, I’m not going to update or rewrite on the basis of late records. The report is also going to have to be written earlier in the year, in February, as I’m full on with work in March/April and I just can’t do it! Greater Manchester These records should only go to Peter Hardy, 28 Hyde Grove, Sale, M33 7TE, email [email protected] - not to Laura Sivell. Some people have been sending their records to both, leading to a fair amount of wasted time in sorting out the duplicate records. Likewise Lancashire and Merseyside records should only go to Laura. Recorders list I always miss someone off, and that, combined with many new contributors sending in records via the Big Butterfly Count and the new iRecord App, has led to the decision not to include a list in this report, or future ones. Hours of work, and there’s always mistakes; it’s just not worth it. Huge thanks to all of you though. Record Validation A few records that seem improbably out of area or outside the normal flight time have been omitted, or included but with a proviso. Of the Big Butterfly Count records, each record has been checked against a map and those records which were judged improbable - mainly of Common Blue in urban areas - were excluded along with the Marbled Whites. Inexperienced recorders can easily mistake a common from a Holly Blue which would be the likelier species in urban gardens. Last year, the data set included records from the iRecord app. This year, I’m still waiting for those to arrive so they are not included. - the staff at BC are busy with the moth atlas. Likewise the Garden Butterfly Scheme, and the WCBS. The New Recorded Squares Table As I said I’d do in the last report, the table now shows the percentage of the total number of squares recorded that showed each species. It should give more accurate trends for the more generalist and widespread species. It will show less change in the rarer species as all/most of these are covered by site transects on the specialised habitats in which they are found, which are going to be visited and counted no matter how many squares are recorded in total. Any change in the percentage of those is going to be partly down to total recording effort, and partly down to trends within the species. White-letter Hairstreak Overall, the table gives some quite interesting results. This one, for White-letter Hairstreak gives a great demonstration of how well it has been doing in recent years. The drought of 2018 forced many of them down from their treetops to feed on flowers, when their aphid honeydew dried up, revealing many new sites. Best year ever for them. Vertical axis is percentage of total squares. The 2017 and 2018 Butterfly Seasons 2017 was a fairly ordinary summer, but with a very mild autumn with good temperatures into December leading to some unusually late records. 2018 gave us the Beast from the East in March, which will have delayed the emergence of those species hibernating as adults, and been of no benefit whatever to larvae trying to feed early in the year. A dry spring gave way to a summer drought and heatwave which went on for weeks; this gave some great views of species such as Purple and White-letter Hairstreaks which were forced down from their treetops as the honeydew that they normally feed on dried up, and they had to resort to sipping nectar from flowers like the majority of their kind. Flight seasons tended to be shorter as no days were wasted sitting out any rain, but numbers of Small Whites, Large Whites and Small Coppers were notably well up on recent years. It was nearly like the good old days. Except that there were no records of High Brown Fritillary in Lancashire, not a single one. That’s something I’d hoped I’d never have to write. It’s not that many years since north Lancashire was the national stronghold of the species, and people would travel from the far ends of the country to see them. Cover Photo - High Brown fritillary by Archie Simpson 2 1 3 0 0 33 57 38 0.2 0.2 7.7 0.6 0.2 0.8 1.2 4.8 0.1 2.2 8.6 0.4 859 14.7 13.6 12.2 70.7 81.4 49.4 22.4 13.2 24.9 30.3 54.3 30.8 44.7 44.8 0.02 58.7 42.8 17.5 2018 0 3 26 17 51 45 0.6 0.1 3.8 0.2 2.4 8.8 0.5 0.2 0.5 0.4 0.2 1.2 1.4 5.3 0.2 744 18.4 19.3 13.1 47.8 56.5 43.8 12.7 20.2 72.4 25.8 41.9 50.8 49.7 34.9 17.2 2017 0 51 15 1.4 3.5 0.2 3.2 7.7 1.4 0.4 0.2 1.1 0.8 0.5 2.4 5.3 0.1 2.5 9.7 0.2 698 19.6 18.7 15.4 47.4 39.3 30.3 11.4 18.6 16.6 45.2 30.5 54.5 43.1 34.6 54.5 32.3 44.4 2016 0 0 29 27 36 0.9 0.6 3.8 2.4 0.9 0.3 0.7 0.6 0.5 1.8 4.9 0.1 1.6 9.4 0.3 774 26.6 16.6 41.9 45.2 34.7 24.8 11.1 16.1 18.4 17.8 48.1 59.4 48.9 52.9 42.7 53.8 17.3 2015 2 0 3 0 24 1.2 4.4 8.9 0.8 0.2 0.7 0.3 0.5 1.5 8.3 0.2 1.6 0.3 794 28.3 26.8 16.7 44.7 54.1 48.4 29.8 21.4 15.3 55.1 14.6 62.9 67.5 33.2 57.5 37.9 49.8 13.6 11.8 2014 0 0 6 33 25 1.5 0.5 4.1 3.7 5.8 1.1 9.2 0.1 0.9 0.5 0.9 3.3 0.1 2.8 8.4 0.3 554 26.9 23.2 10.7 48.1 50.1 46.7 33.2 22.4 18.6 10.3 60.3 52.8 32.6 45.4 43.9 10.1 2013 0 9 0 5 0 2 7 4 19 17 27 2.2 3.8 3.6 4.7 1.5 0.4 1.1 1.1 1.5 0.2 3.8 9.3 0.4 476 22.7 34.3 36.8 44.8 32.5 16.8 18.8 25.4 63.4 54.5 45.4 28.1 40.6 2012 7 0 0 16 10 19 3.7 1.1 3.7 4.4 2.6 1.1 7.8 2.6 1.8 1.8 3.7 5.5 0.3 4.1 2.2 2.6 479 11.1 32.4 31.3 28.7 28.7 23.1 15.2 47.3 49.6 39.9 26.4 36.1 21.2 31.7 12.3 2011 0 0 2 25 32 11 1.5 0.3 8.2 5.3 4.3 4.7 1.1 0.3 1.1 0.5 1.5 2.2 8.7 0.1 1.9 0.5 524 16.4 20.2 36.2 40.6 45.2 29.7 21.9 15.2 35.1 11.6 53.4 51.3 51.9 26.1 42.1 2010 Recorded 2 km squares 0 1 0 1 8 13 45 1.4 2.7 9.1 4.7 3.4 3.2 0.3 0.7 1.6 3.2 9.3 0.1 2.7 2.3 0.3 546 16.6 14.8 52.5 41.2 39.7 26.1 13.3 13.9 57.5 39.7 46.1 31.5 49.2 18.8 39.3 2009 6 0 0 2 1.7 0.2 3.5 1.7 1.5 0.4 5.8 1.7 1.3 1.7 7.8 0.2 2.4 2.9 7.8 0.4 447 15.4 13.8 10.7 49.6 40.4 36.4 28.8 12.5 14.3 30.4 36.4 35.5 42.4 29.7 56.5 23.9 40.9 2008 0 0 46 1.3 0.6 4.9 2.3 1.9 1.1 0.3 1.6 0.6 1.3 1.6 8.8 0.1 2.6 1.6 7.9 0.6 601 14.1 16.4 11.9 34.9 32.4 29.6 30.9 14.6 15.6 19.9 29.7 21.4 48.7 26.2 48.2 19.6 33.4 2007 9 0 0 12 20 32 20 43 7.8 4.8 3.5 1.3 0.3 1.1 0.8 1.6 2.9 0.1 2.4 0.4 9.7 0.3 615 20.6 20.1 12.5 35.7 37.3 32.3 29.9 22.1 22.4 50.2 37.7 47.4 47.6 49.5 17.7 2006 - 0 0 as a percentage of the total number squaresof in which recordings were made.