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Fig. ?--3 (l'l)l)er one) Turkey Buzzard ((?rthartes aura) natural size. ones) Pigeon (;uillemot ((?7515htts colttmba) natural size. l:roln lfilot,.?graph hv D. R. Sl?ufeldt,
Fig. ?--3 (l'l)l)er one) Turkey Buzzard ((?rthartes aura) natural size. ones) Pigeon (;uillemot ((?7515htts colttmba) natural size. l:roln lfilot,.?graph hv D. R. Sl?ufeldt,
