Orb "Tails"

The image below shows quite a few photos I have taken showing orbs with tail-like trailing ends.  These "tails" are probably related to very fast motion of the orbs. See here for 88 photos showing such orb "tails." The photos were are all taken in completely dry weather, ruling out "falling raindrop" explanations.  More of the orbs seems to be rising up than moving down.