| spatial and temporal differences in the blood parasite fauna of passerine birds during the spring migration in bulgaria. | species composition and prevalence of the blood parasites of three migratory acrocephalus species of warblers (acrocephalus arundinaceus, acrocephalus scirpaceus and acrocephalus schoenobaenus) were studied during spring period in bulgaria. for each of the studied species, we compared the parasite fauna during their spring migration at three study sites in search of infection patterns in time and space. spatial differences were registered in the blood parasites and their prevalence for two of th ... | 2009 | 19190934 |