Red-footed Falcon (Falco rufipes) illustrated by Charles Dessalines D' Orbigny (1806-1876). Digitally enhanced from our own…
https://www.rawpixel.com/image/324331/free-illustration-image-falcon-bird-dictionnaire-universel-dhistoire-naturelleFree Image from public domain license
Merlin female (Falco aesalon) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of…