Common Blue: peas and beans | Nature Notes from Dorset

Blues can be tricky chaps to sort out; the silvery underside with orange dots is a familiar feature amongst many of the family. You have to take various factors in to account when separating them.
The common blue (Polyommatus icarus) is on the wing from early June right through until late October as they have more than one brood which overlap giving an almost continual presence during the summer and early autumn. Other similar species tend to be more limited in their flying season.
The common blue is certainly more common than most other species of blue (unless you are in Purbeck where, in places, the adonis blue is now as common, if not more so) and so it is the most likely one you will see. It likes rough, open ground, especially chalk downland, where they can find an abundance of clovers, medicks, trefoils, restharrows and other leguminous flowers; 

Read more: Common Blue: peas and beans | Nature Notes from Dorset

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