The shining sunbeam (Aglaeactis cupripennis ) is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae. It is found in Colombia, Ecuador, and Peru.
In zoology, a nectarivore is an animal that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of the sugar-...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
Oviparous animals are female animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive...
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Partial MigrantPartial migration is when within a migratory species or even within a single population, some individuals migrate while others do not.
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starts withThe shining sunbeam is 12 to 13 cm (4.7 to 5.1 in) long. Males weigh 7.6 to 8.1 g (0.27 to 0.29 oz) and females 6.9 to 7.5 g (0.24 to 0.26 oz). Both sexes have a short, straight, black bill. Unique among sunbeams, neither sex has any white plumage. Males of the nominate subspecies have a dark brown crown and upper back; their lower back and rump are lilac-gold becoming silvery green on the uppertail coverts. Their tail feathers are dark brown to rufous, usually with bronzy edges. Their throat is rufous dotted with dusky gray, the breast a patchy buff, and the belly reddish brown. From north to south, the male's underparts become brighter, the crown darker, and the tail redder. Females are similar to the males but the gold and green of the lower back and rump are duller or absent. A. c. caumatonota differs from the nominate with an iridescent amethyst rump and purplish amethyst uppertail coverts.
The nominate subspecies of shining sunbeam is found in all three Andean ranges of Colombia and south from there through Ecuador to Peru's departments of La Libertad and Huánuco. A. c. caumatonota is found in Peru from the nominate's range south to the departments of Lima and Cuzco.
The species inhabits sub-páramo to páramo, landscapes characterized by grasslands with scattered shrubs and trees. It also inhabits cloudforest and semi-arid ridges with a few trees. In elevation it ranges from 2,500 to 4,300 m (8,200 to 14,100 ft).
In Colombia at least, the shining sunbeam makes seasonal elevational movements.
The shining sunbeam forages for nectar at all levels from the ground to treetops. It feeds at a wide variety of bromeliads, vines, and trees including Embothrium, Puya, and Fuchsia, and males defend patches of flowering plants. The species also feeds on small arthropods by hawking.
The shining sunbeam's breeding seasons differ throughout its range, from March to September in Colombia, between February and April in Ecuador, and in (and possibly between) November and April in Peru. It builds a compact cup nest of moss and cobweb lined with soft plant fibers and sometimes decorated on the outside with bark or lichen. It is placed on a branch or epiphyte, usually 4 to 10 m (10 to 30 ft) above ground but sometimes as high as 15 m (50 ft). The female alone incubates the clutch of two white eggs for 16 to 18 days; fledging occurs 24 to 27 days after hatch.
The IUCN has assessed the shining sunbeam as being of Least Concern. It has a large range, and though its population size is not known it is believed to be stable. It is generally fairly common, occurs in a wide range of habitats, and is found in several protected areas.
