The egg woodpecker (Ovipicus oviraptor), also known as the egg-eating woodpecker the Aracuan bird, is a species of woodpecker native to Northern Africa and the Central Asia, not numerous populations exist in Arabia, but the breeding populations of egg woodpeckers are found in the South American rainforests due to historic zoo escapees around 1940s-1950s. It is one of smallest species of family, a sparrow-sized bird. The egg woodpecker is colored yellowish-white colors with dense brown cross ripple. On wings there are dark edges of feathers forming scaly pattern. On head of this bird the mobile pointed red crest grows. The food behavior of egg woodpecker combines primitive features characteristic for usual woodpeckers with features of extreme specialization to other, than at other species of family, diet. Usually this bird eats various insects, getting them from under bark as any other woodpecker. But it feeds so only half-year. Other half-year, in nesting season of other birds, it eats their eggs. It simply steals eggs of smaller birds from nests, breaking them by beak and drinking out the contents. But it also can ravage even clutches of large birds, up to huge giraffe ostrich, the largest feathered creature of ever living on Earth. In this case it acts other way: while nest owners have left, the bird perches on thick-walled egg, and, having caught by claws and supported by tail, starts to hollow it by beak, as if it is the wood bark. Some times not one, but some birds can peck a large egg together. When the egg-shell is broken open, birds start to drink its contents, using long tongues. If in egg the embryo is developed, and the egg-shell is broken, these small woodpeckers can peck the embryo. The egg woodpecker nests in tree-trunk hollows, not changing “traditions” of other woodpeckers. These birds are monodins, forming pairs till one nesting season. The female hatches out eggs and nestlings, and the male searches for food at this time. Life cycle of these birds is interesting: eggs and nestlings appear when at small passerines in eggs embryos start to develop. It is connected by that it is difficultly to carry to the nest liquid contents of eggs for feeding of nestlings. Therefore the female and nestlings of this woodpecker feed with meat of embryos of birds: male pecks eggs of other birds, orderly ravaging near nests one by one. This woodpecker has excellent memory, and it can remember an arrangement up to three tens nests of various birds placed in its territory.