Jackdaw (Corvus monedula)
This is a sociable little crow, not only enjoying the company of its own kind but often found with flocks of Rooks and also with Carrion Crows too. Despite these flocks you will often find them in pairs, when perched they are often in twos.
The origin of their name is not really known. The daw is a country name for a crow and it seems to me that their distinctive harsh 'jack' call must lead us to Jackdaw but jack also means both common and small in the country so they could be common crows or small crows, take your pick.
Apart from their characteristic call they are easy to tell apart from the other crows because they are smaller and the back of the head is grey (this is not a sign of ageing!). They are also accomplished fliers, with a more direct and purposeful flight than their cousins. They can be quite aerobatic too, just watch them over the cliffs at Durlston for example.
They have lovely blue eyes and are quite endearing, very intelligent and quite pompous too, just watch them strutting around.