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tree sparrow (Passer montanus)
talkative person; knowledgeable person
朝から雀がチュンチュン鳴いている。
Sparrows have been chirping since morning.
雀が公園でパンくずを食べている。
Sparrows are eating breadcrumbs in the park.
雀は都会でもよく見られる鳥だ。
Sparrows are birds often seen even in cities.