Sri Lanka Blue Magpie (Urocissa ornata) canopy foraging: mixed-species bird wave sentry vocalizations?
How do endemic Blue Magpies coordinate multi-species foraging flocks in Sinharaja rainforest through acoustic mimicry and aerial raptor alarm calls?
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3 Answers from travellers
The Sri Lanka Blue Magpie (Urocissa ornata / Kehibella) is a striking point-endemic corvid restricted to primary rainforest canopies in the wet zone. They play a pivotal role in mixed-species foraging flocks (bird waves). Blue Magpies possess an extraordinary vocal repertoire: loud, metallic bell-like chimes, conversational chuckles, and accurate mimicry of raptor calls. Foraging in family groups of 3 to 7 birds in the mid-to-upper canopy, they act as sentries. Upon detecting an airborne predator (such as the Black Eagle), they issue a sharp raspy mobbing call that causes babblers, flycatchers, and trogons to freeze.
Their brilliant blue body plumage, chestnut-red head and wings, and bright red legs and bill make them unmistakable when gliding between emergent Dipterocarp branches.
They are omnivorous canopy foragers, using stout red bills to extract tree frogs, hairy caterpillars, large katydids, and wild figs from epiphytic moss mats.
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