Vince_Adam Photography
Borneo Rufous-backed Kingfisher (Ceyx rufidorsa motleyi), Bornean population.
Borneo
All Rights Reserved © Sabah Trip 2
Oriental Dwarf KF (C. erithaca) comprises two principal colour morphs: the black morph, the black-backed kingfisher or oriental dwarf kingfisher, and the rufous morph, which is sometimes designated as a separate species, the rufous kingfisher, C. rufidorsa (Lim, Sheldon, & Moyle, 2010; Woodall, 2020a,b)
A recent study has revealed genetic differences between C. erithaca and C. rufidorsa, suggesting that they are not morphs, but two distinct lineages. (Lim, Sheldon, & Moyle, 2010; Woodall, 2020a,b). The study suggests that the extensive colour polymorphism may have resulted from introgressive hybridization that occurred in the distant past, when the two morphs were diverging from one another.
Source: Wikipedia
Borneo Rufous-backed Kingfisher (Ceyx rufidorsa motleyi), Bornean population.
Borneo
All Rights Reserved © Sabah Trip 2
Oriental Dwarf KF (C. erithaca) comprises two principal colour morphs: the black morph, the black-backed kingfisher or oriental dwarf kingfisher, and the rufous morph, which is sometimes designated as a separate species, the rufous kingfisher, C. rufidorsa (Lim, Sheldon, & Moyle, 2010; Woodall, 2020a,b)
A recent study has revealed genetic differences between C. erithaca and C. rufidorsa, suggesting that they are not morphs, but two distinct lineages. (Lim, Sheldon, & Moyle, 2010; Woodall, 2020a,b). The study suggests that the extensive colour polymorphism may have resulted from introgressive hybridization that occurred in the distant past, when the two morphs were diverging from one another.
Source: Wikipedia