Assertion: tawny owl's prey | /r/HasProperty | good portion of the prey
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Source sentences:
text: Relatively large-sized prey, Indian gerbils (Tatera indica) and short-tailed bandicoot rats (Nesokia indica), was reported for wintering long-eared owls in Iran estimated to average 163 g (5.7 oz) and 155 g (5.5 oz), respectively, constituted a good portion of the prey (72.9% of biomass) and taken in almost even numbers with smaller Gerbillus species.