watercolor birds in tetrad color scheme seamless watercolor background-purple yellow, orange, blue

american animal aves avian backdrop background backyard beak birb bird birds birdwatching blue bluebird color european fauna feather feathers finch finches goldfinch gouldian gray jay lovers nature orange ornithology plumage prey purple repeat sanctuary scheme seamless shades small songbird species tailfeather taxonomy tetrad tints wallpaper watercolor wild wildlife wing wrapping yellow young