White-bearded Helmetcrest vs Allen's Hummingbird
Oxypogon lindenii ile kıyaslandığında Selasphorus sasin
Side-by-Side Comparison
| Özellik | White-bearded Helmetcrest | Allen's Hummingbird |
|---|---|---|
| Bilimsel Ad | Oxypogon lindenii | Selasphorus sasin |
| Takım | Caprimulgiformes | Caprimulgiformes |
| Familya | Trochilidae | Trochilidae |
| Koruma Durumu | Least Concern | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 14,4 cm (5.7 in) | 8,1 cm (3.2 in) |
| Ağırlık | 4,8 g (0.17 oz) | 3,1500000000000004 g (0.11 oz) |
| Beslenme | Nectarivore restricted to high Sierra Nevada de Santa Marta páramo. Visits sparse Espeletia blooms; supplements … | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| Kuluçka Büyüklüğü | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Ortak Yaşam Alanları
White-bearded Helmetcrest only
Hiçbiri
Allen's Hummingbird only
Hiçbiri
Song & Call Comparison
White-bearded Helmetcrest
Soft, melodic ascending call; gentle pure tones rising gradually in unhurried musical sequence at forest edge.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
White-bearded Helmetcrest
Endemic to the Venezuelan Andes of Mérida in high páramo at 3,000–4,600 m. Restricted range.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
Koruma Durumu
White-bearded Helmetcrest
Allen's Hummingbird
How to Tell Them Apart
White-bearded Helmetcrest
Berylline Hummingbird: males with iridescent beryl-green gorget and head; metallic green; rufous wings; females duller with spotted throat
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
White-bearded Helmetcrest
A small hummingbird (11-12 cm) endemic to the Andes of western Venezuela (Mérida and Trujillo) at 3,500-4,700 m. Males have a white beard and erect crest. Nectarivore of páramo, visiting Espeletia frailejón. A Venezuelan highland endemic.
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.