i didnt change any configs just updated to get owls well you could say i got what i wanted just a bit much XD

That's really strange. How is it in other biomes? It's just using very similar default values to everything else so I'm not sure why you're getting so many.

Maybe it was just a random thing to happen on world generation of the biome from biomes o plenty in the lavender field since nearly no other mob can spawn on the lavender if they need to spawn on ground. Are the owls flying mobs like bats? So they can spawn in air if they are literally the only thing that can spawn they will fill the spawn cap. Only happened in this biome so far.

(I imagine any other air-spawning entities will have the same problem though.)

Okay, so it's definitely biome-specific. That's interesting. I'm not really sure there's anything I can do about it except specifically restricting them from spawning in that biome...

I turned them down to the lowers value possible still some spawning not all that many anymore. Ye I think it does happen with all mobs that spawn in air but in the overworld there aren’t many mobs that fly mostly just bats and since they spawn in caves where caps are filled with normal mobs they never cause this problem (minecraft spawning isn’t the best not your fault) This bug report was more meant to inform you of this possible situation and not asking for a quick fix.

No worries! I just can't really think of any specific fixes for it...

don't know if this is related or not but when i set owl spawning to false they still are spawning

Thanks @Meatshackles I've opened a separate issue for that, #35

There doesn't appear to be any way for me to specifically blacklist the owl from spawning in that biome, I think it might just be an unfortunate side-effect.