Kiev Tumbler — a small, light, high-set breed of tumbler pigeons with an almost vertical body posture (70–85°). Weight 220–310 g (ideal 240–270 g), body length 260–310 mm, wingspan 580–640 mm. Head small and rounded (38–42 mm), beak short and thin (14–17 mm), neck long and curved (65–75 mm) with a "swan" posture. Body compact and cylindrical, back narrow, chest broad and rounded, abdomen tucked up. Wings long (190–210 mm), tips lowered 8–15 mm below the tail. Tail short (70–85 mm), consisting of 12–14 feathers, carried vertically. Legs short and clean-legged (tarsus 28–34 mm), red. Plumage dense, smooth, and glossy. Main colors: black with green sheen, red (cherry) with bronze, yellow, blue with bars, silver (slate), pied ("nun"). Differs from the base Columba livia and other tumblers by smaller size, more vertical posture, short thin beak, and characteristic "swan" neck. Ideal proportions: body length to leg length 9:1, head 1/7 of total length.