The term 'British Bird' can be broken down into three crossword solutions: TIT (3 letters), WREN (4 letters), and ROBIN (5 letters). The tit is a small, mainly insectivorous bird found in Europe, Asia, and North America. The WREN is a small, brown bird found in Europe, Asia, and parts of Africa. The ROBIN is a small, red-breasted bird found in Europe, Asia, and parts of Africa. All three birds are common in the United Kingdom.