| Interface | Description |
|---|---|
| Observer | |
| Quackable | |
| QuackObservable |
| Class | Description |
|---|---|
| AbstractDuckFactory | |
| CountingDuckFactory | |
| DecoyDuck | |
| DuckCall | |
| DuckFactory | |
| DuckSimulator | |
| Flock | |
| Goose | |
| GooseAdapter | |
| MallardDuck | |
| Observable | |
| QuackCounter | |
| Quackologist | |
| RedheadDuck | |
| RubberDuck |