I will go out on a limb and say they are probably Little Browns. They sort of look like big browns because of the elongated bodies, but without a sense of scale, I don't know. I also am not sure if Big Browns cluster together like that, however.
If I remember right they were around 3"- 4" in length, but like I say "if I remember right". I have done alot of caving in the area and have never seen these in other caves so I didn't know if it is of any significance that they are there.
i was along on that trip, and if i remember right we also thought they where big browns but we didnt think they clustered like that. i guess they do though
Big browns do cluster at some sites. I've seen up to 30 in a large, circular bunch. Many more in horizontal clusters a couple of bats wide. While the picture is not clear enough to say for sure, based on what can be noted they seem to be big browns.
When facts are few and far between, hypothesis defies all logic, as to how an individual came to the conclusion, that the point that they are trying to make, is indeed true and not just the fabrications of a deluded mind.
I've wondered what those were also..Did they have a cream colored belly? I saw some bats clustered like that in the coldest part of Johnson's Crook Cave in the winter and they were definitely NOT hibernating. They were very aware of us and obviously did not enjoy our presence. The ones I saw were Charcoal colored, cream bellys and as large as my hand.