Aye, those grey crows are indeed outlaws. Grey crows are a sub species of carrion crows. There is one population that occupies essentially Ireland and Scotland, then there is a gap and they reappear in eastern europe. In the gap are their cousins, carrion crows. This is because during the ice age a small population of grey crows got seperated in Ireland, so they are arguably one of our few indigenous sub-species. During the Nepolionic wars, irish mercenaries who, dieing in the freeezing russian steppes, saw grey crows decend to eat their dead and rotting comrades, thought that their irish ghosts had flown from ireland to take them because they did no know that another sub-population of grey crows existed in eastern europe. Greys have an extraordinaty ecology. 90% of greys never breed even though they may pair and live up to 10 years and remain hangers on on the periphery of a dominant pairs' territory. Sometimes the dominant pair accepts a "third man", an unpaired male related to the dominant male, but none of the rest of the residential flock is allowed near the core territory. Old pairs get to know their territory very well and are very wise to their enemies...try to take a photo of a grey crow! I've never gotten close enough to get a good one...