I did a direct smear and float for one of my 5 month old girls today and saw a few motile organisms that I didn't recognize in the direct smear (with sterile saline). I've noted the video with the history and details but will give them here as well:
Direct smear for bearded dragon fecal exam (viewed mostly at 100x, zoomed in to 400x for a minute or so). Note the motile rod shaped organisms. She's 5 months old, 136 grams, has a healthy appetite and seems to be dominant over her clutchmate (also female) who is 162 grams. They were only a couple of grams apart in weight when I got them at six weeks old, but Stella has was 1/4" shorter. They've both recently been treated for Coccidia (no evidence of it in two subsequent fecal floats), previous smears didn't show these organisms, but I'm not sure which one of them was the donor of the sample. There is no evidence of oocytes in the most recent fecal float.
Sorry for the video quality at 400x - it doesn't seem to capture very well up that close, but is much more clear with the regular microscope lens.
Look at the lower left quadrant of the video at around 3:51 - there's an especially active bugger there.
They're housed together, but she seems to be the more dominant one, so I haven't worried too much about it yet. I have my eyes open for another enclosure, though, because I'm starting to think that her sister may actually be her brother. She's tried to attack my adult male through the glass on the viv a few times and is pretty aggressive with head bobbing at him. He could care less...silly dragons.