To best help the baby bird, you will need to first determine how young the bird is and how far along it is in its development.  A nestling has very few feathers and/or will be covered in fluffy down, their eyes will be closed, or they will just barely open. These are very young birds who should remain in the nest, as they are still highly dependent on their parents for nurturing and food. A fledgling is older than a nestling and they will usually have lots of feathers on their bodies. Fledglings are encouraged or even pushed out of the nest by their parents. They will usually spend two to five days on the ground once they are out of the nest, flapping their wings and hopping about. However, their parents will keep close watch on them from a distance and continue to feed and nurture the fledgling until they learn how to fly, eat, and protect themselves from predators. Another way to determine if the baby bird is in danger is to check if there is a nest in a nearby tree or perch close to the baby bird. You may also notice adult birds perched close to the baby bird and observing the baby bird. If you see a nest or parents nearby, and the bird is a fledgling, you may be fine to leave the baby bird alone.  If you see a nest close to a nestling, you can pick up the baby bird carefully and put it back in the nest. It is a myth that the smell of humans will cause the parents to reject the baby bird, as birds do not have a strong sense of smell. The baby bird should be nurtured and fed by the parents once you put it back in the nest.  You may need to observe the fledgling for at least an hour to determine if the parents are nearby or to spot the baby bird interacting with it’s parents. Make sure the parents visit the baby bird in the nest to confirm the baby bird is not orphaned or alone. Look for signs of injury on the bird, like a broken limb, bleeding on the bird’s body, and missing patches of feathers (if the bird is a fledgling). The bird may also be shivering or making low noises. You may also notice a dead...

How would you rephrase that briefly using Vietnamese?
Xác định xem chim còn non hay đã ra ràng. Tìm chim bố mẹ và/hoặc tổ chim ở gần. Tìm dấu hiệu chim bị thương hoặc bị ốm. Tránh tiếp xúc với chim đã ra ràng nếu nó không bị thương và đang ở gần tổ.