It can't be as bad as Eevee. A solid hour (I even reset) and not a single female at all. Finally when the females started coming (I needed three, you may know, to get each ability), I got so many Adaptability that I was getting very annoyed since the game hadn't given me the Run Away yet (I didn't have Ability Capsules on hand at the time and kinda prefer not using them, and I had Anticipation). Every 12.5% female species became VERY annoying, for sure, with female Bulletproof Quilladin hiding for a long time (I saw a few males).
Then, in typical troll technique, I added another Grass Safari that happened to feature Quilladin as a third. Guess what the very first encounter was? If you said a female Bulletproof Quilladin, yeah...