Russet-backed Thrush vs Eastern Bluebird
Catharus ustulatus в сравнении с Sialia sialis
Side-by-Side Comparison
| Характеристика | Russet-backed Thrush | Eastern Bluebird |
|---|---|---|
| Научное название | Catharus ustulatus | Sialia sialis |
| Отряд | Passeriformes | Passeriformes |
| Семейство | Turdidae | Turdidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | 17,5 cm (6.9 in) |
| Размах крыльев | 19,4 cm (7.6 in) | 27,0 cm (10.6 in) |
| Масса | 34,05 g (1.20 oz) | 31,0 g (1.09 oz) |
| Питание | -- | Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to … |
| Размер кладки | 1-5 | 4-5 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Eastern Bluebird
Open woodland, farmland edges, orchards, and parks with scattered trees and open ground. Readily uses nest boxes.
Song & Call Comparison
Russet-backed Thrush
Eastern Bluebird
A rich, melodious warbled 'chur-wi, tur-a-lee' song. Both sexes sing. Call is a soft, musical 'turee'. Song is gentle and flute-like, suggesting a small thrush. Given from exposed perch.
Geographic Range & Migration
Russet-backed Thrush
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
Охранный статус
Russet-backed Thrush
Eastern Bluebird
How to Tell Them Apart
Russet-backed Thrush
Eastern Bluebird
Males are vivid royal blue above with a rusty-red breast and white belly. Females are grey-blue with a paler rust breast.
Short, thin, dark bill
About These Birds
Eastern Bluebird
The eastern bluebird is a beloved symbol of happiness in North America. Once declining due to habitat loss and competition from introduced species, populations recovered dramatically thanks to a massive citizen science nest box campaign. These gentle thrushes form loose winter flocks and huddle together in nest boxes during cold snaps.