EN
The paper contains data concerning nest sites, material, construction, shape, and sizes in the majority of Acrocephalus species. The descriptions are based on field studies, museum specimens, and literature. The system proposed by CLEMENTS (2000) including 36 species in the genus Acrocephalus has been adopted. Similarities and differences in nesting of 32 species and four subspecies are studied in the last chapter on the basis of 38 characters assembled in Table XLI. They do not always reflect systematic relations of warblers within the genus Acrocephalus on the basis of molecular data.