Hypertext Webster Gateway: "Calypte"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Rubythroat \Ru"by*throat`\, n. (Zo["o]l.)
Any one of numerous species of humming birds belonging to
{Trochilus}, {Calypte}, {Stellula}, and allies, in which the
male has on the throat a brilliant patch of red feathers
having metallic reflections; esp., the common humming bird of
the Eastern United States ({Trochilus colubris}).
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