A nonflying bird is a bird that does not have the ability to fly. The most common examples of nonflying birds are the EMU (3 letters), emeu (4 letters), KIWI (4 letters), RHEA (4 letters), OSTRICH (7 letters), PENGUIN (7 letters), and CASSOWARY (9 letters). All of these birds are flightless, but they have adapted in other ways to survive in their environments. For example, the EMU and RHEA are both large, fast-running birds, while the KIWI and OSTRICH are well-known for their powerful legs and feet. Penguins and cassowaries are also strong swimmers, which helps them to avoid predators.