Allen's Hummingbird
A species of Selasphorus Scientific name : Selasphorus sasin Genus : Selasphorus
Allen's Hummingbird, A species of Selasphorus
Botanical name: Selasphorus sasin
Genus: Selasphorus
Content
Description People often ask General Info
Description
Allen's hummingbird (Selasphorus sasin) is a species of hummingbird. It is a small bird, with mature adults reaching only 3 to 3.5 in (76 to 89 mm) in length. The male has a green back and forehead, with rust-colored (rufous) flanks, rump, and tail. The male's throat is an iridescent orange-red. The female and immature Allen's hummingbirds are similarly colored, but lack the iridescent throat patch, instead having a series of speckles on their throats. Females are mostly green, featuring rufous color only on the tail, which also has white tips. Immature Allen's hummingbirds are so similar to the female rufous hummingbird, the two are almost indistinguishable in the field. Both species' breeding seasons and ranges are common factors used to differentiate between the two species in a particular geographical area. 
Size
10 cm (3.75 in)
Colors
Brown
Red
Orange
Life Expectancy
5.9 years
Nest Placement
Shrub
Incubation Period
1 - 3 broods
Number of Broods
17 - 22 days
Nestling Period
22 - 25 days
Feeding Habits
Allen's Hummingbird primarily consume nectar from various flowers including bush monkeyflower, Indian paintbrush, and sage, supplementing their diet with protein from small insects caught in flight or harvested from vegetation.
Habitat
Allen's Hummingbird typically inhabits a narrow coastal belt of forest, brushy canyons, and chaparral on the West Coast, ranging from sea level to about 1,000 feet in elevation. They favor environments with abundant flowers, including parks and gardens. Allen's Hummingbird display a geographic preference, with males establishing territories in open areas and females nesting in regions with dense tree cover such as eucalyptus, redwood, and Douglas-fir. During winter migration to Mexico, they adapt to oak-pine forests, forest edges, and scrubby areas.
Nest Behavior
Females of allen's Hummingbird species build nests over 7-13 days, sometimes on old structures or by repurposing old materials.
Nest Characteristics
Allen's Hummingbird typically constructs nests in trees or shrubs between 2-50 feet high, often near streams. Nests are made from spiderwebs, downy material from plants, with an outer camouflage of lichen and moss, measuring about 1.25 inches across internally.
Dite type
Nectivorous
People often ask
General Info
Feeding Habits
Bird food type
Bird Feeder Type
Nectar Feeder
Behavior
Allen's Hummingbird primarily feed on nectar, as well as capturing insects in flight and gleaning spiders from vegetation. Both sexes exhibit territorial behaviors, guarding their feeding grounds vigorously against intruders, although they are less combative compared to some related species. Inhabiting coastal scrubs, allen's Hummingbird engage in dynamic courtship rituals, with males performing for females using distinct shuttle and pendulum displays, accompanied by prominent visual and auditory signals. Mating males contribute only to copulation, leaving females solely responsible for rearing the progeny.
Distribution Area
Allen's hummingbird is common only in the brushy woods, gardens, and meadows of coastal California from Santa Barbara north, and southern coastal Oregon. The nominate race of Allen's hummingbird, S. s. sasin, is migratory, and winters along the Pacific coast of central Mexico. A second, S. s. sedentarius, is a permanent resident on the Channel Islands off southern California. This population colonized the Palos Verdes Peninsula of Los Angeles County in the 1960s and has since spread over much of Los Angeles and Orange Counties, south through San Diego County, and east to the western end of Riverside County.
Species Status
Not globally threatened.
Scientific Classification
Phylum
Chordates Class
Birds Order
Swifts and hummingbirds Family
Hummingbirds Genus
Selasphorus Species
Allen's Hummingbird 
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