Assertion: tawny owl's diet | /r/CapableOf | comprise 52.8% of 688 prey items
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text: Studies of the barred owl diet in 6 urban metropolitan areas of British Columbia found that the diet was dominated by young rats of the invasive Rattus genus, comprising 52.8% of 688 prey items, well ahead of native Townsend's voles (Microtus townsendii), which were secondary at 19.2% of the diet.