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Definition of Tree sparrow
1. Noun. Eurasian sparrow smaller than the house sparrow.
Exact synonyms: Passer Montanus
Generic synonyms: Sparrow, True Sparrow
Group relationships: Genus Passer, Passer
Generic synonyms: Sparrow, True Sparrow
Group relationships: Genus Passer, Passer
2. Noun. Finch common in winter in the northern U.S..
Exact synonyms: Spizella Arborea
Generic synonyms: New World Sparrow
Group relationships: Genus Spizella, Spizella
Generic synonyms: New World Sparrow
Group relationships: Genus Spizella, Spizella