Anna's Hummingbird vs Coppery Emerald
Calypte anna compared with Chlorostilbon russatus
Side-by-Side Comparison
| Attribute | Anna's Hummingbird | Coppery Emerald |
|---|---|---|
| Scientific Name | Calypte anna | Chlorostilbon russatus |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 10.0 cm (3.9 in) | — |
| Wingspan | 12.0 cm (4.7 in) | 8.7 cm (3.4 in) |
| Weight | 4.3 g (0.15 oz) | 3.3 g (0.12 oz) |
| Diet | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Venezuelan highlands, visiting small tubular flowers. Takes insects and spiders to supplement floral … |
| Clutch Size | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Anna's Hummingbird
Chaparral, coastal sage scrub, gardens, parks, and open woodland along the Pacific coast. One of few hummingbirds not fully migratory.
Song & Call Comparison
Anna's Hummingbird
Male produces a complex, scratchy song with buzzy 'dzzzzt' notes. Gives a nasal 'chee-chee-chee'. Males sing year-round, even in winter; one of few hummingbirds with true song.
Coppery Emerald
Sharp, piercing screech with shrill intensity; sudden loud rough call issuing during aerial territorial chase.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Coppery Emerald
Found in humid montane forests from Colombia to Venezuela at 600-2,000 m elevation. Resident in Andean foothills.
Conservation Status
Anna's Hummingbird
Coppery Emerald
How to Tell Them Apart
Anna's Hummingbird
Metallic bronze-green upperparts. Males have an iridescent rose-red crown and gorget. Females have green upperparts with grey underparts and a small red gorget patch.
Medium-length, straight, thin black bill
Coppery Emerald
Blue-green Hummingbird (Chionomesa): males with brilliant blue-green gorget; metallic green above; females green above; spotted
About These Birds
Anna's Hummingbird
Anna's hummingbird is the most common hummingbird along the Pacific coast and one of only three species resident in the United States year-round. Males perform spectacular dive displays, plummeting from 40 meters and pulling up with a loud chirp produced by tail feathers. Their body temperature can drop to near ambient at night to conserve energy.
Coppery Emerald
A small hummingbird (8-9 cm) found in humid montane forests from Colombia to Venezuela at 600-2,000 m. Bright copper-green plumage. Nectarivore of cloud forest edges and gardens. A relatively uncommon Andean foothill species.