Suarez_B wrote:I used R-Presence for a report I did late last year looking at a number of tropical reef fishes so I am familiar with that program and how it works in R. I am actually looking at Package Unmarked as a solution as it does random effects as well, but I am interested in looking at the same data set using a zero-inflated negative binomial model using actual count data seeing that the data set I am working with violates a whole lot of assumptions. As I said I am relatively new to this in general.

Fair enough -- I was simply curious. unmarked has pretty strong capabilities, although there is a fair learning curve (IMO). But, their Google group offers excellent support.

Best of luck!