Simplify the following text for a Grade 8 native English-speaking person.
Original: The Kakadu region is one of the worldâ s best for bird watching as approximately 30 percent of Australiaâ s bird species can be seen here .
Simplified: The Kakadu region is one of the worldâ s best for bird watching as about 30 % of Australiaâ s bird species can be seen here .