Simplify the following text for a Grade 4 native English-speaking person.
Original: Albatross chicks fledge on their own and receive no further help from their parents , who return to the nest after fledging , unaware their chick has left .
Simplified: Albatross chicks learn to fly on their own . Their parents do not teach them , and instead they return to the nest even after their chick has left .