Red-backed Shrikes have two key requirements – a ground layer, for feeding, and a shrub layer, for observation, prey storage and nesting. A variety of shrubs and trees can compose the shrub layer, from gorse to bramble and hawthorn. Dietary demands, however, are less flexible. In the farmland of eastern Poland, Golawski (2008) found that 81% of Red-backed Shrike diet consists of Coleoptera (beetles). A further 9% is filled by Hymenoptera (bees, sawflies, wasps and ants), 8% by Heteroptera (bugs) and just 2% by Orthoptera (grasshoppers, crickets, earwigs and cockroaches). Diet varies, to some degree, between arable and grassland habitats, with more bees and fewer beetles consumed in arable. As the season progresses, and crops grow, arable diets shift towards aerial prey because ground food becomes less accessible. Overall, however,…
