There is an owl that I see almost everyday in the same tree on my walk home from school.
In theory, there isn’t a definitive way for me to tell that it 's the same individual, but it’s quite obvious. I’ve had the same experience with a gecko in my backyard and a pair of kestrels at my Dad’s property.
All of this has made me wonder what the rules are regarding posting the same individual animal multiple times. It would make sense for it not be allowed, but I just want to see what others think.
The general guideline is one observation/individual/day unless something significant about the organism changes (ie, the organism moved a long distance, engaged in a behavior change you want to document, changed life stage, etc.)