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Shades of Nature - Hummingbird $5...
Shades of Nature - Hummingbird $5 .999 pure silver coin. Partially gilded and coloured, incl. laser minting.
Just like the three coins of this series, the 2017 issue shows amazing detail by means of precision laser engraving. Furthermore, smartminting has enabled a hitherto unknown interplay of finesse and high relief.
Mintage: 2,000 pieces worldwide. With COA and wooden box.
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|Country :||Cook Islands|
|Face Value :||5 Dollars|
|Metal :||.999 Fine silver|
|Weight :||25 g|
|Size :||38.61 mm|
|Mintage :||2,000 pcs. worldwide|
|Series :||Shades of Nature|
|Certificate of Authenticity :||Yes|
|Original ETUI box/case :||Yes|
Hummingbirds are birds from the Americas that constitute the family Trochilidae. They are among the smallest of birds, most species measuring 7.5–13 cm (3–5 in). Indeed, the smallest extant (not extinct) bird species is a hummingbird, the 5 cm bee hummingbird weighing less than 2.5 g.
They are known as hummingbirds because of the humming sound created by their beating wings which flap at high frequencies audible to humans. They hover in mid-air at rapid wing-flapping rates, typically around 50 times per second, allowing them also to fly at speeds exceeding 15 m/s (54 km/h; 34 mph).
Hummingbirds have the highest metabolism of any homeothermic animal. To conserve energy when food is scarce, and nightly when not foraging, they go into torpor, a state similar to hibernation, slowing metabolic rate to 1/15th of its normal rate.
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