Figure 2 in Notes on a recently described subspecies, and the poorly known nominate subspecies of Rüppell's Parrot, Poicephalus rueppellii mariettae and P. r. rueppellii

Figure 2. Differences in the blue coloration of females of the two subspecies of Rüppell's Parrot Poicephalus rueppellii. Left-hand bird in both A and B, P. r. rueppellii from northern Angola (NHMUK 1890.4.1.21, died 7 June 1882 at London Zoo, see also Fig. 7) and right P. r. mariettae from Namibia (NHMUK 1852.5.1.16, collected by C. J. Andersson in 1850 in Namibia, see Fig. 6) (Jonathan Jackson, © Natural History Museum, London)