Eastern Bluebird vs Northern Cardinal
Sialia sialis comparé à Cardinalis cardinalis
Side-by-Side Comparison
| Attribut | Eastern Bluebird | Northern Cardinal |
|---|---|---|
| Nom scientifique | Sialia sialis | Cardinalis cardinalis |
| Ordre | Passeriformes | Passeriformes |
| Famille | Turdidae | Cardinalidae |
| Statut de conservation | Least Concern | Least Concern |
| Longueur | 17,5 cm (6.9 in) | 22,0 cm (8.7 in) |
| Envergure | 27,0 cm (10.6 in) | 30,0 cm (11.8 in) |
| Poids | 31,0 g (1.09 oz) | 44,0 g (1.55 oz) |
| Régime alimentaire | Insects in summer, berries in winter. Hunts from low perches, dropping to the ground to … | Seeds, grains, fruits, and insects. Especially fond of sunflower seeds at bird feeders. Feeds mainly … |
| Taille de la couvée | 4-5 | 1-5 |
| 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.
Northern Cardinal
Woodland edges, thickets, gardens, and suburban areas. Prefers dense shrubby habitats for nesting.
Song & Call Comparison
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.
Northern Cardinal
Loud, clear whistled phrases: 'cheer-cheer-cheer' and 'birdy-birdy-birdy'. Both male and female sing; female song is softer. Alarm is a sharp metallic 'chink'.
Geographic Range & Migration
Eastern Bluebird
Eastern North America from southern Canada to Honduras and Nicaragua. Partially migratory.
Northern Cardinal
Eastern and central North America from southern Canada to Mexico and Guatemala. Expanding range northward.
Statut de conservation
Eastern Bluebird
Northern Cardinal
How to Tell Them Apart
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
Northern Cardinal
Males are brilliant crimson red overall with a black face mask. Females are warm buffy brown with reddish tinges on wings, crest, and tail.
Thick, conical, bright orange-red 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.
Northern Cardinal
The northern cardinal is the state bird of seven US states, more than any other species. Unlike many songbirds, both males and females sing, often in duets. Cardinals do not migrate and their brilliant red plumage against winter snow makes them a favorite among backyard birdwatchers.