Figure 7 in The dark side of birds: melanism-facts and fiction

Figure 7. Melanistic Water Rail Rallus aquaticus (NHMUK 1939.12.9.3699, Ireland, 13 November 1902), with increased eumelanin, resulting in almost solid black plumage (Harry Taylor, © Natural History Museum, London) Figure 8A. Melanistic Common Snipe Gallinago gallinago (NHMUK 1939.12.9.3643, Ireland), the same form as was previously described as Sabine's Snipe Scolopax sabinii Vigors, 1825; (B) Melanistic Common Quail Coturnix coturnix (NHMUK 1996.41.442, England, 1895), the same form as was previously described as Verreaux's Quail Synoicus lodoisiae Verreaux & des Murs, 1862 (Harry Taylor, © Natural History Museum, London)