The term CRY OF YOUNG BIRD can be broken down into two crossword solutions: CHEEP (5 letters) and PEEP (4 letters). CHEEP is a sound made by a young bird, usually a chick, to call for food or attention from its parents. PEEP is also a sound made by a young bird, but it is usually a softer sound than CHEEP and is used to express joy or excitement. Both of these sounds are commonly heard in nature and are associated with the cries of young birds.