Butterfly First Sightings : Holly Blue

This page shows the earliest sightings of the Holly 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 28th March. The "+- days" column shows the difference from the mean.
Date Recorder Location +- days
30-Mar-2025 Peter Holland Wallingford, Oxon +2 days
18-Mar-2024 Louis Powell Caversham Heights, Berks -10 days
03-Apr-2023 David Hastings Aston, Oxon +6 days
27-Feb-2022 Neil Popham Slough, Berks -29 days
23-Mar-2021 Catherine Brown Beenham, Berks -5 days
13-Mar-2020 Tony Rayner Cholsey, Oxon -15 days
25-Mar-2019 Karen Saxl West Hagbourne, Oxon -3 days
14-Apr-2018 Nigel Partridge Loosley Row, Bucks +17 days
26-Mar-2017 Steve Johnson Newbridge, Oxon -2 days
12-Apr-2016 via Wendy Wilson Iver, Bucks +15 days
06-Apr-2015 Bryan Williams Wokingham, Berks +9 days
31-Mar-2014 Wendy Wilson Gerrard's Cross, Bucks +3 days
20-Apr-2013 Steve Croxford Chinnor, Oxon +23 days
20-Mar-2012 Mike Flemming Abingdon, Oxon -8 days
23-Mar-2011 Claire Haseler Reading, Berks -5 days
24-Mar-2010 John Ward-Smith Bracknell, Berks -4 days
29-Mar-2009 Pete Eeles Thatcham, Berks +1 day
04-Apr-2008 Pete Eeles Thatcham, Berks +7 days
07-Mar-2007 Robert Whitlock Earley, Berks -21 days
16-Apr-2006 Martin Mitchell Shinfield, Berks +19 days
26-Mar-2005 Derek & Cathy Brown Moor Copse, Berks -2 days
09-Apr-2004 Derek Brown Beenham, Bucks +12 days