Figure 2 in The occurrence and status of black-and-white Puffinus shearwaters on the Kenyan and Tanzanian coasts, with the first specimen records of Persian Shearwater P. persicus persicus

Figure 2. Persian Shearwater Puffinus persicus persicus off Oman (left ML 155569281; © Marcel Gil Velasco) and United Arab Emirates (right ML 93690941; © Tommy Pedersen) alongside the December 1981 specimen from Mtwapa Creek, Kenya (centre NMK B9189; Sidney Shema), showing typical pattern of wear and fading on head producing white grizzling / streaking, and a poorly demarcated border between cheeks and throat.