Anna's Hummingbird vs Puerto Rican Emerald
Calypte anna compared with Riccordia maugaeus
Side-by-Side Comparison
| Attribute | Anna's Hummingbird | Puerto Rican Emerald |
|---|---|---|
| Scientific Name | Calypte anna | Riccordia maugaeus |
| 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) | — |
| Weight | 4.3 g (0.15 oz) | 4.25 g (0.15 oz) |
| Diet | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Puerto Rican endemic nectarivore, visiting forest and garden flowers. Supplements nectar with insects and spiders … |
| 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.
Puerto Rican Emerald
Thin, reedy trill with nasal overtone; soft chattering notes delivered continuously during rapid low flight.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Puerto Rican Emerald
Endemic to Puerto Rico. Resident across the island from coastal lowlands to mountain cloud forests.
Conservation Status
Anna's Hummingbird
Puerto Rican 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
Puerto Rican Emerald
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.
Puerto Rican Emerald
A small hummingbird (9-10 cm) endemic to Puerto Rico. Bright emerald-green plumage. Nectarivore of forests, gardens, and plantations across the island. Puerto Rico's only endemic hummingbird. Found from coastal lowlands to mountain cloud forests.