I know it is the same momma because of her size and color. When you see these animals often enough, you get to learn their special looks. Also, the last time we saw both twins, one had a limp. We are guessing it was eaten by a bear.
It is not unusual for there to be more than one momma and baby in an area. We have at least two that come into our yard.
Oh yes, we think we saw Chocolate and Chip two nights ago too. It has been a very long time since we have seen either of them. For a while I thought Chip was visiting on her own. The only reason I think the pair we saw was them is because of the special mark that Chocolate has. The calf (though she was as big as momma) may have been Chip. But I couldn't get a good enough look at her.
The momma and baby were here again tonight. (Sat.) They didn't go into the garden fence this time. I feel so blessed to be able to see them as often as we do.
Rose