Eurasian red squirrel (Sciurus vulgaris). |
A while ago I wrote a book under my real name about my childhood in rural Oxfordshire and included a brief mention of the loss of the native red squirrels, Sciurus vulgaris, that had been so familiar to us in the 1940s and 50's but which had disappeared almost completely by 1960 to be replaced by the non-native grey squirrel, Sciurus carolinensis.
In it I speculated, based on observations in Ireland, that it might have been the loss of the predatory pine marten, Martes martes, that was actually a contributory cause because it had allowed the grey squirrel to proliferate.
It's rewarding to see that this link has now been given added credence by a study published in Proceedings of the Royal Society of London B: Biological Sciences.