Butterfly First Sightings : Chalk Hill Blue

This page shows the earliest sightings of the Chalk Hill 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 4th July. The "+- days" column shows the difference from the mean.
Date Recorder Location +- days
11-Jul-2024 Geoff Dymott Hackpen Hill, Oxon +7 days
07-Jul-2023 Nick Bowles Incombe Hole, Bucks +2 days
24-Jun-2022 Jean-Paul Brouard The Holies, Berks -11 days
09-Jul-2021 Pete Thompson Lardon Chase, Berks +4 days
03-Jul-2020 Michael McNeill Lardon Chase, Berks -1 day
07-Jul-2019 Michael McNeill Lardon Chase, Berks +2 days
03-Jul-2018 Michael McNeill Lardon Chase, Berks -2 days
03-Jul-2017 Jean-Paul Brouard The Holies, Berks -2 days
03-Jul-2016 Karen Saxl Hackpen Hill, Oxon -1 day
04-Jul-2015 Nick Bowles Ivinghoe Beacon, Bucks -1 day
28-Jun-2014 Maureen Cross Lardon Chase, Berks -7 days
11-Jul-2013 Andy Hoskins Yoesden Bank, Bucks +6 days
12-Jul-2012 Nick Bowles Pulpit Hill, Bucks +8 days
02-Jul-2011 Steve Croxford Yoesden Bank, Bucks -3 days
08-Jul-2010 Malcolm Brownsword Aston Upthorpe Downs, Oxon +3 days
02-Jul-2009 Mike Wilkins Lardon Chase, Berks -3 days
13-Jul-2008 Maureen Cross Lardon Chase, Berks +9 days
29-Jun-2007 Maureen Cross Lardon Chase, Berks -6 days
12-Jul-2006 Tony Croft Aston Rowant NNR, Oxon +7 days
11-Jul-2005 Tony Croft Buttlers Hanging, Bucks +6 days
04-Jul-2004 Jan Haseler Lardon Chase, Berks 0 days