Sinharaja mixed-species bird flocks: Greater Racket-tailed Drongo mimicry and kleptoparasitism?

In Sinharaja primary rainforest, the endemic Sri Lanka Crested Drongo (Dicrurus paradiseus lophorinus) acts as the nuclear leader and sentinel of mixed-species bird foraging flocks. The drongo perches on mid-story limbs, scanning for airborne raptors like the Crested Goshawk. If a raptor appears, the drongo issues alarm whistles that cause the entire flock to dive for cover. However, drongos also practice deceptive kleptoparasitism: they emit false alarm calls when an Orange-billed Babbler or Malabar Trogon catches a large insect; when the startled bird drops its prey, the drongo swoops down and snatches it mid-air.