well we are all sure that when it comes to oviposition the changeligns are the masters in that
even more so when changelings win and begin to start their breeding process by losing losing changelings in the invasion process or as a way to increase their ranks or if they are defeated they begin to capture ponies to be used as changeling incubators and thus form a army

What stories do you know that deal with that or that resembles it? ',:3

The first thing that comes to my mind is Lower Canterlot

(although i'm not sure if it counts)