Effect of body mass (log transformed) on probability of infection for six parasite taxa.

<p>Shaded areas about the regression lines indicate 95% confidence intervals. Points were jittered for ease of viewing but may represent only zero or one.</p

Distribution of the prevalence of six parasite taxa by elevation (m above sea level).

<p>Distribution of the prevalence of six parasite taxa by elevation (m above sea level).</p

Effect of elevation (m above sea level) on probability of infection for six parasite taxa.

<p>Shaded areas about the regression lines indicate 95% confidence intervals. Points were jittered for ease of viewing but may represent only zero or one.</p

Localities included in this study. Information about vegetation, elevation (m above sea level), and number of birds sampled as well as families and species are given.

<p>Asterisk denoted localities where effect of season was evaluated.</p

Best fitted models for the relationship between prevalence of six parasite taxa and host ecological variables.

<p>Predictor Variables: S: sociality, FS: foraging strata, NT: nest type, MSF: mixed species flocks, D: diet, NH: nest height, M: migratory behaviour. Delta Akaike's Information Criteria equal or lower than 2.0.</p

Estimated coefficient of logistic regression between infection of six parasite taxa and elevation and body mass.

<p>Estimated coefficient of logistic regression between infection of six parasite taxa and elevation and body mass.</p