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crossbill, Loxia curvirostra, Loxia scotica, parrot crossbill, two-barred crossbill, common crossbill, South Hills crossbill, Loxia sinesciuris, Loxia megaplaga, Loxia leucoptera, Loxia pytyopsittacus, red crossbill, Hispaniolan crossbill, Loxia leucoptera bifasciata, Loxia leucoptera leucoptera, Scottish crossbill, white-winged crossbill | finch with a bill whose tips cross when closed |