The Fatal Eggs the pre-plague level. However, the chicken eggs which are imported from outside the country are, by a mistake, sent to Persikov's laboratory while the reptile eggs destined for the professor end up in the hands of the farmers. As a result, Rokk breeds an enormous quantity of large and overly aggressive snakes, ostriches, and crocodiles which start attacking people. In the panic that follows, Persikov is killed by a mob — which blames him for the appearance of the snakes — and his cameras are smashed. The Red Army attempts to hold the snakes back, but only the coming of
Bird care after fledging varies; albatross chicks leave the nest on their own and receive no further help, while other species continue some supplementary feeding after fledging. Chicks may also follow their parents during their first migration. Brood parasitism, in which an egg-layer leaves her eggs with another individual's brood, is more common among birds than any other type of organism. After a parasitic bird lays her eggs in another bird's nest, they are often accepted and raised by the host at the expense of the host's own brood. Brood parasites may be either "obligate brood parasites", which must lay their