Saturday, November 19, 2016

Into Hibernation...

Some ten days into supposed hibernation, and they've been moving around quite a bit - this one moved 45cm between 14th and 19th November: it's been too mild, again...  We need some cold weather to make them conk out... (Savernake)




Monday, November 14, 2016

Emperors of the fens

In late July 2013, I read a report from the Great Fen Project web site concerning the existence at Woodwalton Fen of a "small population of Purple Emperor Butterflies" - and I suspect I was not alone in raising an eyebrow in surprise at this information.It certainly did not fit in with my belief in the type of habitat I expected to visit in order to see this insect. Come forward three years, to mid-July 2016, when Nigel and I have finished with our Fermyn patrols, and have travelled to Weerribben-Wieden National Park in the province Overijssel - the largest freshwater wetlands of North-west Europe. Discarding the cloak of Imperial Purple, we have come to see the Prince of Orange, a.k.a. batavus in his watery stronghold. However, within an hour of arriving, we are enjoying the company of an Empress, who then flies to a nearby birch tree to dine on a sap run. Local enthusiasts inform us this is not a common sight here, but during our week-long stay, we achieve plenty of sightings, including a count of six females on a damaged oak tree, which was also popular with atalanta. This spot proved to be very reliable for sightings during our stay, and we often made a detour on our bikes to view Herself dining on the sap runs. I can recommend this place to anyone who wishes to see batavus, although don't expect to achieve many sightings, as it is uncommon even here and many hours need to be put in searching the likely areas. It was also great to see Iris in numbers here too, and this insect appears to thrive at this time in the fen and broadland habitat so reminiscent of the wetlands of East Anglia. Perhaps both batavus and iris will thrive in our own country, once the Great Fen Project matures in the years to come, and I welcome the opportunity to see them in such circumstances...