Chickadees are small, charismatic birds known for their distinctive "chick-a-dee-dee-dee" call. While "chickadee" is the most common name used to refer to these birds, there are a few other synonyms you might encounter as well. For example, some people refer to them as "titmice" or simply "tits." In Europe, they are sometimes called "coal tits" or "marsh tits," depending on the species. No matter what you call them, these energetic little birds are always a delight to watch as they flit around the trees, searching for food and chattering away to one another.