Reason: A robin is a type of bird. I went through and removed the robin tag from the couple images that had it as a character, replaced it with the robin_(character) tag then changed robin to a species tag; they could probably stand to be gone through and be changed to more specific robin tags, like robin_(teen_titans), etc.
*edit* Went through robin_(character) and trimmed it up a bit by swapping to more specific character tags when appropriate.
Updated by Rainbow Dash