Snow bunting

Systematic position: The snow bunting (Plectrophenax nivalis) is a member of the Passeriformes order and the Calcariidae family. In an agricultural context, it is categorized as a pest species that can cause economic damage to commercial crops by foraging on seeds and seedlings during wintering and migration periods.

Crops affected: This species primarily affects winter cereal crops, including winter wheat, rye, and barley. Snow buntings often forage on fields where seeds remain on the soil surface or where young sprouts are just beginning to emerge, posing a threat to the density of the crop stands.

Biology and life cycle: As an arctic-breeding species, the snow bunting migrates to lower latitudes for the winter. They typically aggregate in large flocks, which allows them to clear localized patches of a field of all available seeds or sprouts in a very short time. Their activity is most intense during early spring thaws.

Nature of damage and pest status: The primary harm is caused when birds pull up emerging seedlings by their roots while searching for the attached grain. This results in significant patchiness (so-called "bald spots") in the field, leading to reduced plant population density and potential yield losses in the affected areas.

Protection measures: Management strategies focus on non-lethal deterrence to protect the birds while saving the crop. Commonly used methods include sonic bird scarers, reflective scare tape, and visual deterrents such as predator-mimicking kites or decoys. Ensuring adequate seeding depth is also a critical cultural practice to discourage the birds from targeting the sown grains.