The decline of the raven, Corvus corax, in relation to afforestation in southern Scotland and northern England.
The known population of ravens in 1946-1960 has greatly declined. The decline is related to the increase in afforestation, which has reduced the area under sheep and therefore the amount of carrion available. Contributory factors have been better sheep management on the remaining sheep farms, increased disturbance by rock climbers, etc. and recolonization by the golden eagle.