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regulus

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119. The Ruby-crowned Kinglet (Regulus calendula). 120. The Pine Warbler (Sylvicola pinus).

119. The Ruby-crowned Kinglet (Regulus calendula). 120. The Pine Warbl...

Picryl description: Public domain image of a bird, free to use, no copyright restrictions.

95. The Golden-crested Kinglet (Regulus satrapa). 96. The Winter Wren (Troglodytes hyemalis). 97. The House Wren (Troglodytes ædon).

95. The Golden-crested Kinglet (Regulus satrapa). 96. The Winter Wren ...

Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image

Regulus cristatus. Golden-crested Wren, or Kinglet.

Regulus cristatus. Golden-crested Wren, or Kinglet.

Public domain scan of print / book page depicting birds, ornithology, free to use, no copyright restrictions image - Picryl description

Regulus ignicapillus. Fire-crested Wren.

Regulus ignicapillus. Fire-crested Wren.

Public domain scan - Bird, 19th-century zoological illustration print, free to use, no copyright restrictions image - Picryl description