Butterfly First Sightings : Brown Argus

This page shows the earliest sightings of the Brown Argus 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 5th May. The "+- days" column shows the difference from the mean.
Date Recorder Location +- days
20-Apr-2025 Tom Dunbar Incombe Hole, Bucks -15 days
09-May-2024 Graham Smith Homefield Wood, Bucks +4 days
07-May-2023 Sally Japp Incombe Hole, Bucks +2 days
05-May-2022 Neil Holman Incombe Hole, Bucks 0 days
12-May-2021 David Hastings Aston Upthorpe Downs, Oxon +7 days
23-Apr-2020 Tom Dunbar Ivinghoe Beacon, Bucks -12 days
24-Apr-2019 Adrian Cadman Ivinghoe Beacon, Bucks -11 days
13-May-2018 Kevin Booden Incombe Hole, Bucks +8 days
30-Apr-2017 Dominic Mackenzie Warfield, Berks -5 days
12-May-2016 Mick & Wendy Campbell Wallingford, Oxon +7 days
04-May-2015 Dave Wilton Greatmoor, Bucks -1 day
04-Apr-2014 Jan Haseler Ufton Nervet, Berks -31 days
26-May-2013 Nick Bowles Coombe Hill, Bucks +21 days
22-May-2012 David Gower Incombe Hole, Bucks +17 days
24-Apr-2011 Michael & Jahan Swaine Dry Sandford Pit, Oxon -11 days
07-May-2010 Dave Wilton Westcott, Bucks +2 days
24-Apr-2009 Dave Wilton Westcott, Bucks -11 days
14-May-2008 Richard Soulsby Swyncombe Downs, Oxon +9 days
28-Apr-2007 Dave Wilton Westcott, Bucks -7 days
23-May-2006 Tom Stevenson Swyncombe Downs, Oxon +18 days
15-May-2005 Mick & Wendy Campbell Greenham Common, Berks +10 days
18-May-2004 Richard Soulsby Ewelme, Oxon +13 days