Plate 51: Northern Pileated Woodpecker, Yellow-bellied Sapsucker by Louis Agassiz Fuertes https://www.rawpixel.com/image/8905445/image-watercolor-art-vintageFree Image from public domain licenseFlicker birds png sticker illustration, transparent background. Free public domain CC0 image. https://www.rawpixel.com/image/6820648/png-sticker-vintageFree PNG from public domain licenseNorthern Flicker Bird Wing bird partridge pheasant. https://www.rawpixel.com/image/14833240/northern-flicker-bird-wing-bird-partridge-pheasantView licenseNorthern Flicker Bird Wing bird vulture animal. https://www.rawpixel.com/image/14833242/northern-flicker-bird-wing-bird-vulture-animalView licenseNorthern Flicker Bird Wing bird poultry animal. https://www.rawpixel.com/image/14833241/northern-flicker-bird-wing-bird-poultry-animalView license Plate 52: Red-bellied Woodpecker, Red-headed Woodpecker, Northern Flicker by Louis Agassiz Fuertes https://www.rawpixel.com/image/8905429/image-watercolor-art-vintageFree Image from public domain licenseYellow-shafted Flicker 1, U, Breast feather, black and white Washington DC https://www.rawpixel.com/image/8755687/photo-image-public-domain-birds-animalsFree Image from public domain licenseFlicker birds clipart, vintage illustration vector. Free public domain CC0 image. https://www.rawpixel.com/image/6819712/vector-vintage-public-domain-blackFree Vector from public domain licenseNorthern flickerWe spotted this male northern flicker near a nest cavity with three young peeking out. Photo by Courtney… https://www.rawpixel.com/image/9653512/photo-image-plant-tree-animalFree Image from public domain license