Answer:
a book about bald eagle nesting sites in the United States
Explanation:
While making a research about the current population of bald eagles in the United States, the best type of text that Li Wei needs to read for his research would be a book about bald eagle nesting sites in the United States because this text is most accurate and up-to-date about nesting sites.
A book about the nesting sites of bald eagles in the United States would be more accurate than others because new eagles can be tracked and recorded
