Rivoli's Hummingbird

Eugenes fulgens

Order

APODIFORMES

Family

Hummingbirds (Trochilidae)

Code 4

RIHU

Code 6

EUGFUL

ITIS

Egg Color:

White



Number of Eggs:

2



Incubation Days:

15 - 19



Egg Incubator:

Female



Nest Location:

In fork of medium shrub or small tree 2 - 4m above ground



Nest Material:

Plant fibers and down bund with insect and spider silk



Migration:

Most do not migrate



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General

Rivoli's Hummingbird: Large hummingbird of Mexican highlands that occurs in limited areas of southwest U.S. Appears very dark green overall but in good light may show blue-green to green throat, purple forehead, gray vent, and small but prominent white spot behind eye; tail is all dark. Female has dark green upperparts, faintly scaled, dingy gray underparts, and dark tail with white corners. Juvenile female resembles adult female but has more scaled appearance; juvenile male shows green wash on underparts. Rivoli's Hummingbird is a new name for the Magnificent Hummingbird. It was split into Rivoli's and Talamanca Hummingbird, the latter is found in the cloudforests of Costa Rica and western Panama.

Range and Habitat

Rivoli's Hummingbird: Range on the edges of humid montane forests, pastures, open woodland and scrub of southwest United States and central America. Fairly common residents in the higher elevation mountains of Costa Rica. Found in canyons, pine-oak woodlands, and stream-sides. Winters in Mexico south to Panama.

Breeding and Nesting

Rivoli's Hummingbird: Two white eggs laid in an open cup nest located on a horizontal branch in moderately high trees, often on branches overhanging streams. No other information on nesting habits. Female thought to incubate the eggs between 15 to 19 days.

Foraging and Feeding

Rivoli's Hummingbird: Perches on prominent branches and flies out repeatedly to catch flying insects, also makes long flights to visit widely spaced flowers for nectar.

Readily Eats

Sugar Water

Vocalization

Rivoli's Hummingbird: Loud, sharp "tsik" or "chip." May also give a squeaky chatter when agitated.

Similar Species

Rivoli's Hummingbird: Blue-throated Hummingbird has shorter bill and more distinct face pattern with dark mask and white eyeline. Plain-capped Starthroat has longer, straighter bill and strong face pattern.

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UnderpartsX

Belly, undertail coverts, chest, flanks, and foreneck.

UpperpartsX
Back, rump, hindneck, wings, and crown.
VentX
Birds do not have two separate cavities for excrement and reproduction like humans do. In birds, there is one single entrance/exit that suits both functions called the vent, cloaca or anus.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X