Assertion: fairy bluebird | /r/CapableOf | weigh about 0.5 to 2.8 ounces
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Source sentences:
text: Fairy bluebirds and leafbirds range in length from about 6 to 11 inches (13 to 30 centimeters), and weigh, on average, about 0.5 to 2.8 ounces (13 to 80 grams).