Fork-tailed drongo

The Fork-tailed drongo (lat. Dicrurus adsimilis) belongs to the order Passeriformes and the family Dicruridae. While primarily insectivorous, this species is documented as an agricultural pest in specific regions where they opportunistically feed on orchard fruits, potentially causing economic losses for farmers and gardeners.

This bird species inhabits a variety of environments, including open woodlands and savannas, often venturing into agricultural fields. The primary crops at risk include various berry-producing plants and soft-skinned orchard fruits. Their presence in orchards is often driven by environmental stressors, such as droughts, which limit their primary insect-based diet.

The biology and lifecycle of the fork-tailed drongo are closely linked to the availability of nesting sites in high branches. They typically breed during the warmer seasons. The necessity to support offspring often leads to increased foraging intensity, which can coincide with the harvest period of local crops, turning the birds into significant orchard intruders.

The damage caused by these birds involves pecking at fruits, leading to direct crop loss and creating entry points for pests and pathogens. This damage compromises the quality and shelf-life of the produce. In severe cases, high local populations can result in significant yield reductions, requiring immediate management interventions to protect the crop.

Effective management strategies against the fork-tailed drongo include:

• Installation of bird-exclusion netting.
• Deployment of visual scare devices, such as reflective tape or predator decoys.
• Use of ultrasonic bird repellers.
• Regular monitoring of orchard borders to discourage nesting.