The term TITMOUSE is composed of two other words, CHICKADEE and MAG. CHICKADEE is a nine-letter word meaning a small North American songbird with a black cap and bib, white cheeks, and a call consisting of two or three high-pitched notes. MAG is a three-letter word meaning a type of small songbird found in Europe, Asia, and Africa, with a black head and throat, grey back, and white belly. Together, these two words form the term TITMOUSE, which is a small songbird found in North America, Europe, and Asia, with a grey back, white belly, and black head and throat.