The term 'Black and White Diving Bird' can be solved by two crossword solutions: AUK (3 letters) and MURRE (5 letters). An AUK is a type of seabird that is found in the Northern Hemisphere, and is known for its black and white plumage. Murres are also seabirds that are found in the Northern Hemisphere, and they are characterized by their black and white feathers and their ability to dive underwater.