ExploderWizard
Hero
You are aware that those animals have different sensory organs and neuro-processing capabilities than a human, correct? That these evolved of thousands of years to adapt to these situations over generations, not after a few weeks for a single creature. If not, rest assured, the writers of the D&D rules at least knew this and incorporated this knowledge into the write-up of the bat.
The rules of the game actually say that those creatures possess a special ability that lets them use a sense other than normal sight; an ability that humans explicitly do not have according to the rules. If you don't believe me, consult the human write-up in the player's handbook and the bat write-up in the appendix and you will see it. Note the bat's "Blind Sight" and "Echolocation" entries, and the human's lack of the same.
If your character is completely shut down in the dark then just accept the fact that he/she is no ninja and was just playing around at it. Tell the party that you hope they manage to save the world and go home to grandma's house for some milk & cookies.