The Carolina Chickadee is one of my common backyard feeder birds. They are cute little birds and at times can be fussy. I am close to the overlap area but I am still not sure if I have seen the Black Capped Chickadee. At times I think I might have heard a different sound coming from these sweet looking birds. My Carolina Chickadee has duller plumage, a shorter tail and a neat lower edge on their bib. they are best told by their song according to my field guide.