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The olive-spotted hummingbird is found along the upper Amazon River and its major tributaries in northwestern Brazil, eastern Ecuador, northeastern Peru, and extreme southeastern Colombia. It has habitat requirements unique among hummingbirds: It is found almost entirely on young river islands and sometimes on the adjacent "mainland" shore.
Although most hummingbird species live in remote habitats where their population numbers are difficult to assess, population studies in the United States and Canada indicate that the ruby-throated hummingbird numbers are around 34 million, rufous hummingbirds are around 19 million, black-chinned, Anna's, and broad-tailed hummingbirds are about ...
The IUCN originally assessed the mangrove hummingbird as Threatened, then in 1994 as Vulnerable, and since 2000 as Endangered. It has a restricted range and habitat requirements. Its estimated population of between 1500 and 7000 mature individuals is believed to be decreasing.
Hummingbirds are small birds capable of hovering in mid-air due to the rapid flapping of their wings. They are the only birds that can fly backwards. Unless otherwise noted, all species listed below are considered to occur regularly in North America as permanent residents, summer or winter residents or visitors, or migrants.
The breeding habitat is throughout most of the Eastern United States and south-central and southeastern Canada in deciduous and pine forests and forest edges, orchards, and gardens. The female builds a nest in a protected location in a shrub or a tree. Of all hummingbirds in the United States, this species has the largest breeding range. [10]
The Mexican woodnymph (Eupherusa ridgwayi) is a species of hummingbird in the family Trochilidae endemic to western Mexico. It lives in subtropical or tropical moist lowland/foothill forest and plantations, feeding on flower nectar and insects. Mexican woodnymphs are vulnerable, threatened by habitat loss through deforestation.
As with all hummingbirds, the female alone constructs the nest and raises the young. The nest is made from soft plant fibers cemented with spider silk. The exterior is camouflaged with green mosses where available; in drier habitats, moss-like dendroid lichens may be used, or the exterior may be left bare. It is typically attached to a tree ...
The fiery-throated hummingbird feeds on nectar taken from a variety of small flowers, including those of epiphytic Ericaceae, bromeliads, shrubs, and small trees. At flowers too deep for its bill it will take nectar from holes made by itself, bumblebees, and flowerpiercers. The species is aggressive and dominant over most other hummingbirds.
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