Butterfly First Sightings : Marbled White

This page shows the earliest sightings of the Marbled White 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 June. The "+- days" column shows the difference from the mean.
Date Recorder Location +- days
28-May-2025 Karen Saxl Upton, Oxon -9 days
02-Jun-2024 Louis Powell Hartslock, Oxon -4 days
07-Jun-2023 John Kearns Hartslock, Oxon +1 day
02-Jun-2022 Hamza Soydan East Hagbourne, Oxon -4 days
03-Jun-2021 Leo Bateman Hackpen Hill, Oxon -3 days
29-May-2020 David White
Karen Saxl		 Cox Green, Berks
Upton, Oxon		 -8 days
03-Jun-2019 Peter Thompson Lardon Chase, Berks -3 days
03-Jun-2018 David Webb Crookham Common, Berks -3 days
07-Jun-2017 Karen Saxl Upton, Oxon +1 day
09-Jun-2016 Dominic Mackenzie Hartslock, Oxon +3 days
06-Jun-2015 Karen Saxl Upton, Oxon 0 days
30-May-2014 Karen Saxl Upton, Oxon -7 days
09-Jun-2013 Karen Saxl Upton, Oxon +3 days
13-Jun-2012 Karen Saxl Upton, Oxon +7 days
07-Jun-2011 Peter Law Bernwood Forest, Bucks +1 day
14-Jun-2010 Colin Williams Sydlings Copse, Oxon +8 days
12-Jun-2009 David Redhead Wytham Woods, Oxon +6 days
08-Jun-2008 Maureen Cross Streatley, Berks +2 days
05-Jun-2007 David & Wendy Redhead Chilswell Valley, Oxon -1 day
17-Jun-2006 Tom Dunbar Bucks +11 days
14-Jun-2005 Richard Soulsby Moulsford, Oxon +8 days
11-Jun-2004 UTB field meeting Bucks +5 days