Assertion: common eider | /r/CapableOf | weigh between 1.5 and 2.5 kg
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Source sentences:
text: The Common Eider, Somateria mollissima, is Britain’s heaviest duck, weighing between 1.5 and 2.5 kg; and with a body length of up to 71 cm, it’s also the largest duck in the Northern Hemisphere.