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Sunday, June 5, 2011

Atlas work - more Odonata

Had a leisurely start today and headed out when things got warm to search Vasaltsheden for Ischnura pumilio, dropping the team at the beach. The mire here is very dry and much of it was accessible for a change, amazingly I could not find a single damselfly, just one Libellula depressa had a look around before buzzing off. The bushes in the mire had a singing icterine warbler, surely a recently arrived migrant.

Before picking up the team I checked Mäsinge pond again whilst I was in the neighbourhood. Things have really picked up here with several new species recorded: Erythromma najas, Brachytron pratense, and a pair of Libellula depressa.

After a quick lunch I dashed out again. The weather forecast for the rest of the week looks dicey so these sunny days have to be capitalised on. I checked out a few sites near home. Lönhult pond is an odd spot, by rights it should have a rather poor Odonate fauna. It lies in the middle of an agricultural area, is clearly highly eutrophic and has little submerged aquatic vegetation. I was stunned therefore to record 11 species of dragonfly at the site including both Coenagrion lunulatum and hastulatum. After walking the superb Vasaltsheden mire and recording just one species it seemed a little strange. At least 15 Libellula depressa here were entertaining. It was not just dragonflies either, I flushed two green sandpipers off the pool and the small area of scrub and trees included within the buffer surrounding the man-made wetland had singing marsh warbler and thrush nightingale.

The pond at Lönhult - it may not look like much but it is going to be an interesting place to watch.

One of two Coenagrion lunulatum spotted at Lönhult today, I thought this species would have narrower habitat tolerances but it looks like it is going to be widespread in BK.

Last site for the day was the valley mire part of Sinarpsdalen, plenty of red-backed shrikes in here plus one fly over hawfinch. The mire was chocker with Pyrrhosoma nymphula and Coenagrion puella (easily the best site for these two that I have found in BK so far). But the prize went to the five or so Calopteryx virgo along the little brook. This spot may well produce my first Cordulegaster in BK I reckon.

Stunner! virgo in all it's glory.

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