Infection parameters of helminths found in 5 species of owls from Calabria (southern Italy).

P: prevalence (percentage of infected birds, %); I: mean intensity (mean number of worms per infected bird). n is the host sample size; numbers in parentheses are the 95% confidence intervals (C.I.) of each parameter. However, C.I. of mean intensity could not be calculated when the number of infected hosts was 1 or 2. In the latter case, the range of intensities is given in brackets.