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current posts

 
Fri 24th January 2020 16:17 by Rob Grimmond
Combe St. Nicholas, South Somerset
At last, my first moth of the year, a fittingly named Early Moth on the house wall! Only my 7th record and first in January (previously recorded only in February and March).Early Moth Combe St Nicholas
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Thu 23rd January 2020 23:53 by Chris Iles
Holcombe, 23 January 2020
A Dotted Border at the windows just now, my first adult moth of the year, and the first recorded here since 2013.
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Thu 23rd January 2020 17:03 by Tim Howard
Kestrels Rise Little Quantock 22-01-2020
First trap of the year produced just a solitary Chestnut.  Not very exotic but you've got to start somewhere.
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Thu 23rd January 2020 08:48 by Paul Newman
Pylle, Shepton Mallet
22/1/20 - two moths this time - another early Hebrew Character, and a Dark Chestnut, FFY but not the first this Winter.
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Thu 16th January 2020 09:09 by Paul Newman
Pylle, Shepton Mallet
15/1/20 - A moth !!  One solitary male Winter Moth, and that was ir.
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Mon 13th January 2020 19:18 by Paul Newman
Pylle, Shepton Mallet
Another nil return. ( Like a Tax Return, only less hassle).
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Thu 9th January 2020 17:30 by Nigel Cottle
Netherclay LNR
This lunchtime I found a few Depressaria radiella pupal exuviae in hogweed stems. A common enough species but not one that I had recorded at Netherclay before today.

Depressaria radiella 090120

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Thu 9th January 2020 17:12 by Paul Newman
Ian - thanks for the clarification.  Yes, it IS a bit complex, and an unusual way of doing this sort of analysis.  Using the much simpler way of extracting just the number of species trapped, and not abundance, I can see that 2007 and 2012 were indeed poorer than other years within my own records, but as I recall, these were exceptionally wet summers, and made a distinct difference overall, but 2016 was as good as most in my trappings on this basis, even though I think that too was not good weather-wise.  Still, it helps to pass the dark days - all good fun !!
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Thu 9th January 2020 11:45 by Ian Mathieson
Paul. This is very boring and very unscientific but I shall try and explain how I obtain my rankings. In 2003 I started recording here. At the end of the year I selected the 20 most abundant Somerset species according to the atlas of the time. The number of each species I had caught that year became my base figure of 100%. The following year I compared the number I had recorded that year against the base figure to give me a new percentage. The minimum, if I had not recorded any, would be 0% so I fixed the maximum, if I recorded twice as many, as 200%. By doing this for all 20 species and averaging the percentages I got a new percentage. If it had been quieter than 2003 it would be less than 100% but if the year had been more productive then the percentage would be higher than 100%.
In 2003 I recorded 250 different macro species. This number was multiplied by the percentage figure and gave me a base number in that year of 25000. The following years I've done the same. In 2019 my percentage catches was 90% of the 2003 figures but I recorded 289 different species. 90 multiplied by 289 is 26010 which is 104% of the base number of 25000. Therefore 2019 has a rating of 104 and can be ranked alongside the other years.
What it doesn't take account of is the amount of trapping I am able to do or the fact that I now often operate both an MV trap and an actinic. This would be why I regularly record more species than 2003 when I only had an MV trap.
As I keep repeating it is very unscientific but I believe that anybody who has been trapping for a number of years would accept that 2004, 2005 and 2006 were better for moths than 2007,2012 and 2016.
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Wed 8th January 2020 16:53 by Paul Newman
Interesting, Ian, but can you please say what the basis is for your ranking?  Clearly not the number of species in each year, as I imagine that would probably be a few hundreds.  I'm not a scientist, and have only a little hair left, so I am at very small risk of being bothered by your methodology.
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Wed 8th January 2020 10:58 by Ian Mathieson
Norton sub Hamdon
Despite some excellent conditions this year I have still failed to record a single moth. As a result I have had time to sort out last year's results. My admittedly unscientific method for ranking the year puts 2019 as the 7th best year out of the 17 years I've recorded here. It had a ranking of 104 just below the 105 of 2017 but far ahead of the 86 of 2018. It was helped by good improvements from Common Rustic, Dark Arches, Heart and Dart, Large Yellow Underwing and Uncertain. Poorer performers were Flame Shoulder, Buff Ermine, Setacious Hebrew Character, Silver Y and Small Square Spot.
For what it's worth here is my ranking for the past 17 years.
    2004 ranking 122
      2006 117
        2005 109
          2009 108
            2010 105
              2017 105
                2019 104
                  2015 101
                    2011 100
                      2003 100
                        2014 97
                          2018 86
                            2008 83
                              2013 81
                                2012 71
                                  2016 68
                                    • 2007 48
                                    Although my methods would have real scientists tearing their hair out my figures do show what we all are noticing in our traps- things are not getting better!
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                                    Wed 8th January 2020 08:56 by Sue Davies
                                    Tree House Butleigh
                                    12’ last night but only one Chestnut and 2 Winter moths.
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                                    Tue 7th January 2020 09:21 by Paul Newman
                                    Pylle, Shepton Mallet
                                    6/1/20 - just a single Winter Moth this time. Ho hum.
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                                    Mon 6th January 2020 18:07 by Steve Chapple
                                    Pen Elm, Taunton
                                    Dark Chestnut, Winter Moth (3), Mottled Umber (didn't record one last year) and LBAM were my first records for the new year.
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                                    Sun 5th January 2020 09:08 by Paul Newman
                                    Pylle, Shepton Mallet
                                    4/1/20 - the first nil return of the year- it won't be the last.
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                                    Thu 2nd January 2020 19:30 by John Bebbington
                                    Langport, 1 January 2020
                                    Like Paul I had 2 moths - Winter Moth and Mottled Umber (plus hundreds of fungus gnats).
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                                    Thu 2nd January 2020 13:49 by Paul Newman
                                    Pylle, Shepton Mallet
                                    1/1/20 - another mildish night, and this time, TWO moths.  A Winter Moth in the Actinic, and a remarkably early Hebrew Character in the MV.  Quite a surprise.
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