Greylag goose

The greylag goose (Anser anser) is a member of the Anatidae family, order Anseriformes. While recognized as a wild waterfowl species, it poses a significant challenge to modern agriculture, particularly during spring migration when flocks can cause substantial economic losses to newly planted fields and winter crops.

These birds primarily target green forage, consuming winter wheat, rye, and barley shoots. They are also known to damage emerging seedlings of various crops, including oilseed rape and corn. The nutritional requirements of large flocks during their flight stages lead them to forage intensively on agricultural land near wetlands.

The biological behavior of greylag geese involves high site fidelity, meaning they will return to the same agricultural fields repeatedly once they identify a reliable food source. This persistent foraging behavior is what turns them into a persistent pest, as they can clear entire sections of a field within a few days of arrival.

The damage caused by these birds is twofold: consumption of the green crop canopy and soil compaction from constant trampling by the flock. This behavior results in patchy growth, reduced plant density, and, in severe cases, the necessity for complete reseeding of the affected areas, which significantly impacts overall farm productivity.

Effective mitigation and management strategies focus on preventing geese from settling on vulnerable fields:

• Deployment of propane-powered automatic gas cannons.
• Strategic use of scarecrows and raptor-shaped kites.
• Installation of holographic tape and visual deterrents.
• Active herding or patrolling of fields during peak feeding times in the early morning and late afternoon.