Anna's Hummingbird vs Tres Marias Hummingbird
Calypte anna เปรียบเทียบกับ Cynanthus lawrencei
Side-by-Side Comparison
| คุณสมบัติ | Anna's Hummingbird | Tres Marias Hummingbird |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Calypte anna | Cynanthus lawrencei |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Trochilidae | Trochilidae |
| สถานะการอนุรักษ์ | Least Concern | Near Threatened |
| ความยาว | 10.0 cm (3.9 in) | — |
| กว้างปีก | 12.0 cm (4.7 in) | 10.0 cm (3.9 in) |
| น้ำหนัก | 4.3 g (0.15 oz) | 3.05 g (0.11 oz) |
| อาหาร | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on nectar from Tres Marias Island flowers; diet supplemented with small insects and spiders … |
| จำนวนไข่ | 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.
Tres Marias Hummingbird
Pure, sustained whistle with bell-like clarity; single clear note ringing out then slowly fading in air.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Tres Marias Hummingbird
Endemic to the Tres Marías Islands off the Pacific coast of western Mexico. Resident in tropical deciduous forest.
สถานะการอนุรักษ์
Anna's Hummingbird
Tres Marias Hummingbird
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
Tres Marias Hummingbird
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.
Tres Marias Hummingbird
A medium-sized hummingbird (9-10 cm) endemic to the Tres Marías Islands off western Mexico. Green plumage. Recently split from Broad-billed Hummingbird. Nectarivore of tropical deciduous forest on the islands. A very range-restricted island endemic.