Butterfly First Sightings : Common Blue

This page shows the earliest sightings of the Common Blue in the Upper Thames region since 2004 (per UTB Recent Sightings data). The mean first sighting date of this species in the UTB region is 6th May. The "+- days" column shows the difference from the mean.
Date Recorder Location +- days
25-Apr-2025 Roy Booth Warburg Reserve, Oxon -11 days
30-Apr-2024 Dominic Woodfield Lardon Chase, Berks -6 days
11-May-2023 Tom Dunbar Ivinghoe Beacon, Bucks +5 days
05-May-2022 John Kearns Homefield Wood, Bucks -1 day
14-May-2021 Naomi German Reading, Berks +8 days
05-May-2020 Michael McNeill
John Clough		 The Holies, Berks
Homefield Wood, Bucks		 -1 day
06-May-2019 Tony Rayner Cholsey, Oxon 0 days
14-May-2018 Neil Holman Pitstone Church End, Bucks +8 days
07-May-2017 UTB field meeting Homefield Wood, Bucks +1 day
12-May-2016 Mick & Wendy Campbell Wallingford, Oxon +6 days
07-May-2015 Neil Holman Calvert Jubilee, Bucks +1 day
04-May-2014 Wendy Wilson Iver, Bucks -2 days
05-May-2013 Charlie Jackson Ivinghoe Beacon, Bucks -1 day
12-May-2012 Richard Wheeler Hartslock, Oxon +6 days
25-Apr-2011 Tony Speight Sands Bank, Bucks -11 days
15-May-2010 Tony Rayner Cholsey, Oxon +9 days
01-May-2009 Tony Speight Sands Bank LNR, Bucks -5 days
03-May-2008 David Fuller Maidenhead, Berks -3 days
13-Apr-2007 David Gantzel Hazlemere, Bucks -23 days
11-May-2006 Chris Raper Hartslock, Oxon +5 days
13-May-2005 Dave Wilton Westcott, Bucks +7 days
17-May-2004 David Fuller Homefield Wood, Bucks +11 days