Is both your Child class & Parent class in the same file? In that case, use 'pro.bird'(fully qualified name) in your child class to refer 'bird' and this will override the whatever imports you have made for 'bird'.
For example, you might have imported Date from util package
but at a certain part of your program, you might want to use Date class that is inside sql package
Imports are only relevant for source files, not classes themselves. They are little more than a tool that allows programmers to be lazy. Without them you had to write java.util.List, javax.swing.JPanel etc all the time. So yes, if your two classes are located in different files, then you can import lib.bird in one file and pro.bird in the other.