tree sparrow

noun

• 1a Eurasian sparrow with a chocolate brown cap in both sexes, inhabiting agricultural land.

  • Passer montanus, family Passeridae (or Ploceidae)

• 2a migratory sparrow-like songbird of the bunting family, breeding on the edge of the North American tundra.

  • Spizella arborea, family Emberizidae (subfamily Emberizidae)