Allen's Hummingbird vs Pale-tailed Barbthroat
Selasphorus sasin เปรียบเทียบกับ Threnetes leucurus
Side-by-Side Comparison
| คุณสมบัติ | Allen's Hummingbird | Pale-tailed Barbthroat |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Selasphorus sasin | Threnetes leucurus |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Trochilidae | Trochilidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 8.1 cm (3.2 in) | 11.5 cm (4.5 in) |
| น้ำหนัก | 3.1500000000000004 g (0.11 oz) | 5.42 g (0.19 oz) |
| อาหาร | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … | Primarily nectarivore; uses its strongly hooked bill to probe for nectar in curved flowers; eats … |
| จำนวนไข่ | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
Allen's Hummingbird only
ไม่มี
Pale-tailed Barbthroat only
Song & Call Comparison
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Pale-tailed Barbthroat
Rapid, buzzing trill with insect-like quality; sustained high-frequency vibration followed by softer descending notes.
Geographic Range & Migration
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
Pale-tailed Barbthroat
Found in the Amazon basin and Guiana Shield from Venezuela and the Guianas south to Peru and Bolivia. Resident in humid forest interior.
สถานะการอนุรักษ์
Allen's Hummingbird
Pale-tailed Barbthroat
How to Tell Them Apart
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
Pale-tailed Barbthroat
Bronze-green upperparts; pale greyish-buff underparts; dark malar stripe; tail pale buff-white with dark subterminal band; lacks the strong black banding of Band-tailed Barbthroat; Amazonian species with paler tail pattern.
About These Birds
Allen's Hummingbird
A small hummingbird (8-9 cm) breeding along the Pacific coast from Oregon to southern California. Males have an orange-red throat and rufous flanks. Closely related to Rufous Hummingbird. Partial migrant; some populations resident on Channel Islands. Named after Thomas Allen.
Pale-tailed Barbthroat
A medium-sized hummingbird (10-12 cm) found in humid lowland forests of northern South America and Trinidad. Green plumage with white-tipped tail feathers and a decurved bill. Nectarivore of forest undergrowth, visiting Heliconia and Costus flowers. An important lowland forest pollinator.