Paul D Stewart / Three illustrations from Cassell's Pigeon Book, 1874 showing domestic pigeons: Red and Yellow Jacobin, Red-pied pouter cock with crop inflated, and Shield, Hyacinth and Suabian.
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Paul D Stewart / Composite of original line drawings from Darwin's 'Variation in Animals and Plants under Domestication' 1868. The ancestral form, the rock pigeon hangs up dead to the left while some of the many varie...