Blood parasites of birds in Central Europe. 1. Survey of literature. The incidence in domestic birds and general remarks to the incidence in wild birds.

This paper constitutes an introduction to the forthcoming series of publications summing up the present store of knowledge on the incidence and ecology of avian haematozoa in Central Europe. The paper contains bibliography dealing with the incidence of these parasites in the region studied. The problem of the incidence of blood parasites in domestic birds is discussed in detail. The incidence of blood parasites in wild birds is only briefly outlined as it is to be treated in detail in forthcoming papers.