- Level of development at hatching: Precocial birds are more developed at hatching than altricial birds. They are able to walk, find food, and sometimes even fly within a few hours of hatching. Altricial birds, on the other hand, are born with their eyes closed and are completely dependent on their parents for food and care.
- Size of body: Precocial birds are typically larger when hatched than altricial birds. This is likely due to the fact that they need to be able to fend for themselves right away. Altricial birds, on the other hand, are smaller and underdeveloped, and must rely on their parents for food and protection.
- Flight ability: Precocial birds are able to fly at a younger age than altricial birds. This is important because they need to be able to find food and escape from danger. Altricial birds, on the other hand, must remain in the nest for a number of weeks before they are able to fly.
- Habitat: Precocial birds are typically found in open habitats, such as fields and grasslands. Altricial birds, on the other hand, are typically found in more wooded areas. This is because they need to be able to find shelter from the elements and predators.
- Diet: Precocial birds are typically omnivores, eating both plants and animals. Altricial birds, on the other hand, are typically fed a diet of insects, worms, and other small animals by their parents.
- Parental care: Precocial birds receive a relatively low amount of parental care, compared to altricial birds. This is because they are able to fend for themselves at an early age. Altricial birds, on the other hand, require a great deal of parental care, including feeding, protection, and warmth.