Assertion: blue wing kookaburra | /r/HasProperty | d. leachii
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text: Kookaburras are best known for their unmistakable call, which is uncannily like loud, echoing human laughter — good-natured, but rather hysterical, merriment in the case of the renowned Laughing Kookaburra (Dacelo novaeguineae); and maniacal cackling in the case of the slightly smaller Blue-winged Kookaburra (D. leachii).