Fig. 4From: Species and abundance of ectoparasitic flies (Diptera) in pied flycatcher nests in FennoscandiaPrevalence (×) in F. hypoleuca nests of (a) O. chloropus relative to distance from the coast, and of (b) O. avicularia relative to latitude. Predicted values (●) and 95 % confidence limits are produced by reduced models shown in Table 2. Sample sizes are shown in Table 1 Back to article page