In which generation will there be almost 100% non-singing females if there are no changes in the birds’ environment and interactions?

Generation 5

Explanation:

In generation 5 there will be 100 percent non-singing females if there are no changes in the birds environment and interactions.

In generation 4 the count of non-singing female female birds in generation 4 is 88 percent and if there is no change in the environment, the female bird generation number 5 will be non singing ( 98 %).

As, they no make any noise they can easily escape and keep on reproducing and because of this very soon there will be 98 to 100 percent of the non singing birds in generation 5.