EN
The morphological types of the pulmonary valve and its adjacent structures were determined. The research was conducted on the heart of 498 domestic and wild birds of five orders. The organ underwent imaging with the use of an X-ray apparatus, a 16- slice computed tomography scanner, and an ultrasonograph. The structures examined are characterised by a great changeability as far as particular taxonomie individuals are concerned. This is connected with the ways and living conditions of particular taxonomic and ecological groups of birds. New terms to characterise the pulmonary valve were suggested. Research of this type will allow us to link such basic sorts of study with cardiac surgery in the future.