Baird's Sparrow vs American Tree Sparrow
Passerculus bairdii 比較対象 Passerella arborea
Side-by-Side Comparison
| 属性 | Baird's Sparrow | American Tree Sparrow |
|---|---|---|
| 学名 | Passerculus bairdii | Passerella arborea |
| 目 | Passeriformes | Passeriformes |
| 科 | Passerellidae | Passerellidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 13.1 cm (5.2 in) | 14.4 cm (5.7 in) |
| 体重 | 17.916666666666668 g (0.63 oz) | 19.0 g (0.67 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 2-6 | 4-6 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Baird's Sparrow
Least Concern
American Tree Sparrow
About These Birds
Baird's Sparrow
The Baird's Sparrow is a small sparrow that breeds on the northern Great Plains of North America and winters in the southwestern United States and Mexico, weighing about 17.9g with a wingspan of 13.1cm. It inhabits native grasslands and feeds on seeds and insects. Grassland loss on both breeding and wintering grounds has reduced its populations.
American Tree Sparrow
The American Tree Sparrow is a compact passerellid weighing 19 g with a 14.4 cm wingspan, breeding in shrubby Arctic tundra and wintering in open fields and weedy areas across North America. It is identified by its rufous cap and distinctive central breast spot.