Eastern screech owl

The Eastern screech owl (lat. Otus asio), belonging to the Strigidae family, is a small predatory bird that can occasionally be classified as a pest in specific agricultural settings. While primarily beneficial in natural ecosystems, their presence in high-density commercial orchards can lead to mechanical damage to crops and infrastructure, requiring managed control strategies.

The biology of Otus asio revolves around nocturnal activity and site-tenacious nesting habits. They often seek refuge in the dense canopies of fruit trees, especially during the breeding season which overlaps with fruit maturation. Their movement through the foliage, combined with their tendency to cache prey items, can disrupt the development of young fruit and sensitive branches.

The species primarily affects stone fruit and pome fruit orchards. Damage typically occurs when the birds perch on delicate branches or store food items, leading to skin punctures on fruit and bark abrasions. These physical injuries can serve as entry points for bacterial and fungal pathogens, significantly impacting the overall yield quality and tree health.

The nature of the damage is often characterized by surface bruising on ripening fruit and visible scratching on the bark of younger trees. Left unmanaged, these minor damages can accumulate, leading to increased decay rates within the canopy. The economic impact is felt through a reduction in premium-grade harvest and the potential for secondary disease outbreaks in the orchard.

Integrated pest management strategies are crucial for mitigation. Recommended actions include the use of acoustic repellers that mimic predator calls, the installation of reflective tapes, and covering high-value trees with protective netting during the peak harvest season. Additionally, maintaining proper orchard sanitation by removing deadwood and hollows reduces the attractiveness of the orchard as a nesting site.