The Needle-billed Hermits (Phaethornis philippii, Bourcier, 1847) is a fairly common South American hummingbird with an extremely large range. It is named for its slender, long, virtually straight bill.
It is also known as Ermitaño Picoaguja (Spanish), Ermite de Filippi (French) Dunnschnabeleremit, or Orangefarbener Schattenkolibri (German).
Distribution
The Needle-billed Hermist occurs naturally in eastern Peru, northern Bolivia, and western Brazil (south of the Amazon to the western bank of Tapajós River).
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Nesting / Breeding
Hummingbirds in general are solitary and neither live nor migrate in flocks; and there is no pair bond for this species – the male’s only involvement in the reproductive process is the actual mating with the female.
During the breeding season, the males of many Hermit species form leks (= competitive mating displays) and congregate on traditional display grounds. Once a female enters their territory, they display for her. Their display may entail wiggling their tails and singing. Willing females will enter the area to choose a male for mating. Oftentimes she will choose the best singer.
He will separate from the female immediately after copulation. One male may mate with several females. In all likelihood, the female will also mate with several males. The males do not participate in choosing the nest location, building the nest, or raising the chicks.
The female Needle-billed Hermit is responsible for building the remarkable cone-shaped nest which hangs by a single strong string of spiders’ silk and/or rootlets from some overhead support, which could be a branch or the underside of the broad leaves of, for example, Heliconia plants, banana trees or ferns about 3 – 6 ft (1 – 2 m) above ground. However, these unusual nests have been found beneath bridges, in highway culverts and even hanging from roofs inside dark buildings. The nest is often near a stream or waterfall. It is constructed out of plant fibers woven together and green moss on the outside for camouflage in a protected location. She lines the nest with soft plant fibers, animal hair, and feathers down, and strengthens the structure with spider webbing and other sticky material, giving it an elastic quality to allow it to stretch to double its size as the chicks grow and need more room.
The average clutch consists of two white eggs, which she incubates alone, while the male defends his territory and the flowers he feeds on (although hermit males tend to be less aggressive than the males of other hummingbird species). The young are born blind, immobile, and without any down.
The female alone protects and feeds the chicks with regurgitated food (mostly partially digested insects since nectar is an insufficient source of protein for the growing chicks). The female pushes the food down the chicks’ throats with her long bill directly into their stomachs.
As is the case with other hummingbird species, the chicks are brooded only the first week or two and are left alone even on cooler nights after about 12 days – probably due to the small nest size. The chicks leave the nest when they are about 20 days old.
Diet / Feeding
The Needle-billed Hermits primarily feed on nectar taken from a variety of brightly colored, scented small flowers of trees, herbs, shrubs, and epiphytes. They favor flowers with the highest sugar content (often red-colored and tubular-shaped).
Hermits are “trap-line feeders” – a feeding technique that entails visiting plants along a long route (in this case up to 0.6 miles or 1 km). Most other hummingbird species maintain feeding territories in areas that contain their favorite plants (those that contain flowers with high-energy nectar), and they will aggressively protect those areas. Hermits use their long, extendible, straw-like tongues to retrieve the nectar while hovering with their tails cocked upward as they are licking at the nectar up to 13 times per second. Sometimes they may be seen hanging on the flower while feeding.
Many native and cultivated plants on whose flowers these birds feed heavily rely on them for pollination. The mostly tubular-shaped flowers exclude most bees and butterflies from feeding on them and, subsequently, from pollinating the plants.
They may also visit local hummingbird feeders for some sugar water, or drink out of bird baths or water fountains where they will either hover and sip water as it runs over the edge; or they will perch on the edge and drink – like all the other birds; however, they only remain still for a short moment.
They also take some small spiders and insects – important sources of protein particularly needed during the breeding season to ensure the proper development of their young. Insects are often caught in flight (hawking); snatched off leaves or branches, or taken from spider webs. A nesting female can capture up to 2,000 insects a day.
Males establish feeding territories, where they aggressively chase away other males as well as large insects – such as bumblebees and hawk moths – that want to feed in their territory. They use aerial flights and intimidating displays to defend their territories.
