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Fig. 4 | Avian Research

Fig. 4

From: The phylogeny of francolins (Francolinus, Dendroperdix, Peliperdix and Scleroptila) and spurfowls (Pternistis) based on chick plumage (Galliformes: Phasianidae)

Fig. 4

Aa shows remnants of a fuller orbital stripe of Pternistis erckelii. By comparison, among Scleroptila this orbital stripe arches over the orbit and is well defined. Ab shows the nare spots which were, in its ancestral stage, probably connected to the crown cap of P. erckelii. Ba and Bb show the remnants of a fuller jaw stripe, which is well defined in some francolin species (e.g. Scleroptila) and the eye line respectively, which is typical of all spurfowls. Ca shows the pronounced eyebrow, Cb shows the remnants of a jaw stripe and Cc shows the thick eye stripe respectively of P. nobilis which are typically also found on G. gallus

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