Estimated number of adult red grouse consumed by all buzzards at Langholm Moor.

Figures are total estimated number of grouse consumed during each of three breeding seasons by three diet assessment methods and during each of two winters using pellets from roost sites. The percentage consumed is evaluated from the numbers of grouse present at the start of the relevant period (breeding (nests) or non-breeding (winter roosts), and to the numbers of grouse lost by the end of it. Diet data were collected from 32 nests (11 in 2011; 10 in 2012; 11 in 2013) and 44 winter roosts (23 in 2013/14; 21 in 2014/15).