Ruby-crowned kinglet (Regulus calendula) near Rescue Creekby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038838/photo-image-bird-animalFree Image from public domain licenseRuby-crowned kingletSmall, mostly olive-colored bird with a bit of red visible at the top of its head Credit NPS/Andy… https://www.rawpixel.com/image/4033541/photo-image-bird-animalFree Image from public domain licenseCrowned Wren (Malurus coronatus) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds… https://www.rawpixel.com/image/321502/free-illustration-image-john-gould-australia-wrenFree Image from public domain licenseAmerican Golden crested-Wren from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original… https://www.rawpixel.com/image/277453/free-illustration-image-audubon-wren-birds-americaFree Image from public domain licenseRuby crowned Wren from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original from… https://www.rawpixel.com/image/277433/free-illustration-image-audubon-birds-america-public-domain-calendulaFree Image from public domain license