I am working on finding the abundance of flying-fox roosts through different methods and one is distance sampling. From my research, the DISTANCE package on R studio is the best way to find the abundance. However, because of the data collected it only gives me ...

Estimate SE Average p 0.3280759 0.07631434 N in covered region 57.9134360 17.32306104 CV Average p 0.2326119 N in covered region 0.2991199

Some other examples I have read can get abundance and density values. Any way to work around this? From my understanding, I should be able to use a distance sampling formula, but as I am unexperienced the different formulas I am finding confuse me. The most common one I am finding is...

N=(n/Pa)/(a/A)

I have the area of the roosts, the transect distance ( I used the wandering-quarter method), and the cluster sizes too.

Am I missing something?