Many thanks for the feedback. I checked the timestamps on the three photos, and actually the time of the third photo was in between the other two by only a few secods, so I think the shortened appearance is mainly due to the more oblique angle of the photo (which is also out of focus, which doesn't help). Certainly we didn't knowingly see any eventa in the area and we were there some time, and we are pretty familiar with that species from Doi Pha Hom Pok.