| Grouw, H.van; Dekkers, W., 2023. The taxonomic history of Black-shouldered Peafowl; with Darwin's help downgraded from species to variation. Bulletin of the British Ornithologists’ Club 143 (1): 111-121
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| Grouw, H.van; Dekkers, W., 2019. Various Gallus varius hybrids: variation in junglefowl hybrids and Darwin's interest in them. Bulletin of the British Ornithologists’ Club 139 (4): 355-371
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