an olive-gray, American kinglet, Regulus calendula, the male of which has an erectile, ruby crest.
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How to use ruby-crowned kinglet in a sentence
The ruby-crowned kinglet was piping in an evergreen tree near by, but him I had been hearing for several days.Bird Lore, Volume I--1899 | Various
During its migrations it is often associated with the titmouse and the ruby-crowned kinglet.
We hear the note of the ruby-crowned kinglet (regulus calendula) which some one says sounds like "Chappie, chappie, jackfish."The New North | Agnes Deans Cameron