As always, please contribute your reports to the Woodland Trust's Nature's Calendar site.
An interesting release from them (2nd Aug) states that Spring 2011 was the earliest this century, some sightings such as the Orange Tip Butterfly were the earliest for 100 years; with some reports the earliest since the charity began recording data (1891).
The spring months of March, April and May had a UK mean temperature of 9.1 degrees Celsius, which was 1.8 degrees above the 1971-2000 average. April was particularly warm, with mean temperatures across the UK being 3.7 degrees Celsius above average. For Central England, it was the warmest April since records began in 1659. It was also the sunniest April since records began in 1929.
The preliminary analysis compares all events with the baseline year of 2001, which is the year spring temperatures were closest to the 1961-1990 thirty year average.
To assist in gathering reports, a new VisitWoods site has been set up to help you find your nearest natural hotspots. :)