இரட்டைவால் குருவி | BLACK DRONGO
Small but wouldn’t mind taking birds double its size as they fiercely protect its territory, Drongo is known for its aggressive nature so much so other small birds (like bulbuls, doves, orioles so on) prefer nesting in the vicinity of Drongo nest to gain protection. Studies on these birds confirm that they imitate keeping the context like for instance when encounter a snake they make noise of its predator-hawk. There also a mention by Darwin on Drongo cuckoo being a mimic of Drongo.
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