Genus
Corthylio (Ruby-crowned kinglets)
Corthylio calendula. Photo: (c) Jonathan Eisen, some rights reserved (CC BY)
The ruby-crowned kinglet (Corthylio calendula) is a very small passerine bird found throughout North America. It is a member of the kinglet family. The bird has olive-green plumage with two white wing bars and a white eye-ring. Males have a red crown patch, which is usually concealed. The sexes are identical (apart from the crown), and juveniles are similar in plumage to adults. It is one of the smallest songbirds in North America. The ruby-crowned kinglet…
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