closer view of hair - no noticeable tips of a different color (as there would be if it were M. lucifugus)

-part of what I went through to try to figure out the ID
-as you can see I eliminated Big Brown Bat fairly soon - ha ha :oD
-Early in the afternoon of the 15th I wrote Sarah Deutsch at DNREC an eMail saying that I didn't think it was the Little Brown Myotis after all because it doesn't have a keel and the pictures of my Bat show that it does have one, and also said I would keep on looking. I spent the rest of the day and most of the night to figure it out.
-I began to suspect that maybe I needed to revisit the Big Brown Bat.
-As I found areas that I thought might be important, I added more pictures of the hair, keel and calcar, a better look at the underside of the tail, and the hand . At 2 in the morning I called it quits. I didn't have the urge to look any further.
-As luck would have it, I received an eMail late on Monday from Sarah and that saved me the trouble of, probably, another day of work to finalize the ID on my own.
-I'm grateful they (Sarah and her boss) took the time to look at the pictures and provide the correct ID.
-It may not sound like it, but I really did have fun researching - sometimes, though, you just need a break! :o)

---Update 5/15/2015: Just found a site (http://fieldguide.mt.gov/speciesDetail.aspx?elcode=AMACC01010) that says M. lucifugus doesn't have a keel. Since one of my pictures shows what I think is the keel, the search for identity continues.
Am using hit or miss - so:
*if* I'm understanding calcar and keel it can't be:
-Big Brown Bat (Eptesicus fuscus) it does have a keel but the, um, tragus is different from mine
-California Myotis (Myotis californicus) because, location, location, location and its got a "tail that does not extend beyond the border of the tail membrane"
(another example of keeled calcar at http://users.humboldt.edu/joe/image-23.htm)
-Eastern Red Bat (Lasiurus borealis) it just looks wrong in so many ways even though it has a keeled calcar - color is wrong and etc. and (http://www.arkive.org/eastern-red-bat/lasiurus-borealis/image-G88771.html) it has a triangular tragus, so there!
-Keen’s Long-eared Myotis (Myotis keenii) looks like it has pointed ears and the tragus thinner and almost pointed
-Northern Long-eared Bat (Myotis septentrionalis) long ears? maybe, rounded ears? yes, range? yes, tragus? oh, my goodness, no!
-Western? Long-eared Myotis (Myotis evotis) tragus is wrong - the tragus on my bat is about as wide at the tip as at the base. M. evotis has a distinct taper - here: http://fieldguide.mt.gov/speciesDetail.aspx?elcode=AMACC01070
-Indiana Bat (Myotis sodalis) fur dark brown to black according to http://www.fws.gov/Midwest/Endangered/mammals/inba/index.html and here is tapered tragus http://plateauecological.com/services/indiana_and_northern_long-eared_bat_consultation - therefore, also no good even though it also has a keeled calcar
-Long-eared Myotis (Myotis evotis) - must be a synonym for M. septentrionalis - ?
-Oh, good grief! This should help. A list of "Nine species of bats live at least part of the year in the northeastern United States, and two southern species reside infrequently in Pennsylvania."
http://extension.psu.edu/natural-resources/wildlife/wildlife-nuisance-and-damage/bats/a-homeowners-guide-to-northeastern-bats-and-bat-problems - Well, the least they could have done was give the binomial instead of just the common name. grrr
-This is where I stopped. :o)

UPDATE 5/28/15: Andrea Howey at Tri-State Bird Rescue wrote with some interesting information about "impact birds" that might apply to this Bat.

What I hadn't mentioned anywhere else here, was that I had difficulty taking the pictures (near the end of the series) where it's on top of the bush because it kept flipping itself over on its back and trying to "bury" its head in the bush, backwards, just like when it was on the ground. At this point I didn't see it chewing on anything (I was too busy trying to right it and quickly take a picture).

Andrea says she doesn't have experience with Bats and is only speculating, but that it isn't uncommon to see the following behavior with impact birds: "Not being able to right themselves (Ataxic/ torticollis); Getting debris in their mouth (not necessarily because of eating, but trying to right itself, but cannot- sometimes use mouth to try and assist in moving- and gathering debris); Not flying from your hands (when bat banding these guys generally took off as soon as you opened your hand); Being found during the day".

Ataxia, I learned, implies a dysfunction of the nervous system where the symptom is loss of control of voluntary coordination in moving muscles; Torticollis (twisted neck) can be from a variety of causes, but simply means the neck or head is abnormally positioned from the usual symmetrical posture.

Wikipedia <http://en.wikipedia.org/wiki/Torticollis> has this to say:
"Torticollis is a fixed or dynamic tilt, rotation, or flexion of the head and/or neck. The type of torticollis can be described depending on the positions of head and neck.
-laterocollis : the head is tipped toward the shoulder
-rotational torticollis : the head rotates along the longitudal axis
-anterocollis : forward flexion of the head and neck
-retrocollis : hyperextension of head and neck backward
A combination of these movements may often be observed."

I'm so glad Andrea took the time to send her insight on impact birds. It offers possibilities that help to satisfiy my curiosity about the Big Brown Bat's behavior.