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This species has been labeled as a least-concern species [1] because of its broad range (236,000 km 2 (91,000 sq mi)), considerable population size and growth (14.6% increase per decade). Trend maps for black-chinned hummingbirds showed a relatively stable population between 2009 and 2019, albeit with some decline in late years of that decade.
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Humming serves communication purposes by alerting other birds of the arrival of a fellow forager or potential mate. [71] The humming sound derives from aerodynamic forces generated by the downstrokes and upstrokes of the rapid wingbeats, causing oscillations and harmonics that evoke an acoustic quality likened to that of a musical instrument.
The booted racket-tails are a small group of hummingbirds in the genus Ocreatus that was long considered to have only one species, O. underwoodii.They are native to cloud forest edges in the South American Andes and Maritime Andes.
The calliope hummingbird (/ k ə ˈ l aɪ. ə p i / kə-LY-ə-pee; Selasphorus calliope) is the smallest bird native to the United States and Canada. [3] [4] It has a western breeding range mainly from California to British Columbia, and migrates to the Southwestern United States, Mexico, and Central America for its wintering grounds. [3]
83 Wire-crested thorntail: Discosura popelairii (Du Bus de Gisignies, 1846) 84 Black-bellied thorntail: Discosura langsdorffi (Temminck, 1821) 85 Letitia's thorntail: Discosura letitiae (Bourcier & Mulsant, 1852) 86 Racket-tipped thorntail: Discosura longicaudus (Gmelin, JF, 1788) 87 Tufted coquette: Lophornis ornatus (Boddaert, 1783) 88 Dot ...
Male birds typically weigh around 6 g (0.21 oz), females 7 g (0.25 oz). [3] The bill of the female is also longer, as is its hind claw. The difference in between the sexes may be ecological in its origin, reflecting different foraging niches the two sexes have during times when they have high energy demands (feeding chicks). [ 6 ]
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