Final answer:
The dodo birds were commonly accepted as an overweight, dumpling of a bird due to their sedentary lifestyle, poor flying ability, and preference for rich food.
Step-by-step explanation:
The dodo birds are commonly accepted as an overweight, dumpling of a bird due to various reasons. One reason is that they had a sedentary lifestyle, which means they were not very active and spent most of their time on the ground. Another reason is that they were poor at flying. Their wings were small and weak, which made it difficult for them to fly for long distances. Lastly, they had a preference for rich food. The dodo birds lived in a habitat with abundant food resources, so they did not need to exert much effort to find food, leading to weight gain.