R-help Digest, Vol 123, Issue 30

Hi all are there any R packages that include "circular" stats similar to 
Oriana (http://www.kovcomp.co.uk/oriana/newver4.html)?

I am interested in looking at annual patterns of bat activity where data 
will have date/times and relative abundance values for each Date.

I would like to have a circular plot with the "circumference" axis the 
12 months of the year and then a value of relative abundance and likely 
with ggplot2 this can be set to color= species.

Tnx

Bruce