Why is my budgie keep making like mouse sound he a male budgie we dont no if is vocal cord as gone or not anws?

There is nothing to worry about Budgies make a variety of calls , sometime imitating sounds that they hear on a regular basis, also it could be coming into breeding condition, and this is it’s way of calling for a mate.

Breeder

all varieties of parrots, and budgies are considered to be in the parrot family can imitate other animals. I have a budge, cockatiel and a moustache parakeet that all can imitate guinea pigs.