The parasite community has proven to have selective regime over wide areas [1] and [2]. Many studies, involving molecular methods, have revealed an unexpectedly rich fauna of haemosporidians in birds [3], [4], [5] and [6]. The avian haemosporidian community may differ between regions and can thus force an important heterogeneous selection pressure in various populations [7] and [8]. Avian malaria parasites (Plasmodium and Haemoproteus species; sensu [9]) may impact body condition of each individual host [10], which might in turn affect host population dynamics [11], [12] and [13]. Therefore, knowledge on parasite prevalence, diversity and distribution in migratory birds should be among the key aspects when making assessment of species-specific threats.