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The most interesting thing is that you have snapped a mating pair. It is very rare that one sees mating bumbles. It shows the enormous difference in size between the sexes here, although that is not always quite as dramatic.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Lat/Lng: 52.1492, -6.9946
OS grid ref: SL584618