White-necked Jacobin vs Allen's Hummingbird
Florisuga mellivora compared with Selasphorus sasin
Side-by-Side Comparison
| Attribute | White-necked Jacobin | Allen's Hummingbird |
|---|---|---|
| Scientific Name | Florisuga mellivora | Selasphorus sasin |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 13.6 cm (5.4 in) | 8.1 cm (3.2 in) |
| Weight | 7.666666666666667 g (0.27 oz) | 3.1500000000000004 g (0.11 oz) |
| Diet | Nectar generalist visiting a wide range of forest flowers; also catches small arthropods by aerial … | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| Clutch Size | 1-3 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-necked Jacobin
High, insect-like buzzing sustained for several seconds; thin monotone delivered continuously during hovering display flight.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
White-necked Jacobin
Found from Mexico south through Central America to Venezuela, Trinidad, and the western Amazon. Common in lowland forest edge and gardens.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
Conservation Status
White-necked Jacobin
Allen's Hummingbird
How to Tell Them Apart
White-necked Jacobin
Males vivid blue head and throat; white nape and hindneck contrasting sharply with blue; white belly; green back; white tail with dark terminal band; females brown above, spotted below; bold …
Allen's Hummingbird
About These Birds
White-necked Jacobin
A medium-sized hummingbird (11-12 cm) with a dazzling white breast, deep blue hood, and green back. Found from Mexico to Brazil and Trinidad. Male's brilliant white neck and chest are striking in flight. Nectarivore of forest canopy, visiting a wide variety of tropical flowers.
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.