Dekkers, W.

Grouw, H.van; Dekkers, W.; Rookmaaker, L.C. 2024. Third time lucky for Forsten’s pigeon; taeniura, forsterii, forsteni. Bulletin of the British Ornithologists’ Club 144 (1): 29-38, figs. 1-4. doi.org/10.25226/bboc.v144i1.2024.a4

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.

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.

Grouw, H.van; Dekkers, W.; Rookmaaker, L.C. 2017. On Temminck’s tailless Ceylon Junglefowl, and how Darwin denied their existence. Bulletin of the British Ornithologists’ Club 137 (4): 261-271, figs. 1-7.