Butterfly First Sightings : Marsh Fritillary

This page shows the earliest sightings of the Marsh Fritillary 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 22nd May. The "+- days" column shows the difference from the mean.
Date Recorder Location +- days
19-May-2024 Mark Jones Yoesden Bank, Bucks -3 days
22-May-2023 Neil Holman Yoesden Bank, Bucks 0 days
21-May-2014 n/k Seven Barrows, Berks -1 day
08-Jun-2013 Michael McNeill Seven Barrows, Berks +17 days
27-May-2012 Jon Mercer Seven Barrows, Berks +5 days
19-May-2011 Malcolm Brownsword Seven Barrows, Berks -3 days
19-May-2010 Derek Brown Seven Barrows, Berks -3 days
24-May-2009 Jim Asher Seven Barrows, Berks +2 days
14-May-2008 n/k Seven Barrows, Berks -8 days
05-May-2007 n/k Seven Barrows, Berks -17 days
28-May-2006 Ali Latham Seven Barrows, Berks +6 days
22-May-2005 Gareth Knass Seven Barrows, Berks 0 days
01-Jun-2004 n/k Seven Barrows, Berks +10 days