Black-billed Cuckoo from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original from… https://www.rawpixel.com/image/277317/free-illustration-image-audubon-bird-birdsFree Image from public domain license30.The Yellow-billed Cuckoo (Coccyzus americanus) 31. The Black-billed Cuckoo (Coccyzus erythrophthalmus) illustration from… https://www.rawpixel.com/image/329332/free-illustration-image-cuckoo-bird-zoology-new-yorkFree Image from public domain license