The landscape and geographical preconditions of forming of ecological systems with participation of ornitofauna in Povolge region
The specific ecological systems with expressive landscape and geographical borders were formed in Povolge condition. In functioning of ecological systems representatives of ornitofauna have an important role. In complex ecological systems evolutionforming parasitic systems have some place. The different creatures are members of these systems. Key words: landscapes, ecological geography, ornitofauna, parasitic systems.