sentences:  In addition to this, the parasite's ability to disperse can be mediated by migratory birds and thus increases variation in prevalence patterns and alters host-parasite adaptation processes.Host susceptibility is highly variable as well and numerous efforts have been made to understand the relationship between increased prevalence and host traits such as nesting and foraging height, sexual dimorphism or even incubation time length.So far, the effects of this disease in wild populations is poorly understood.