I'm playing the indev build(AetherII-1.10.2-r1-build7) and it seems there are no cockatrice spawning at night and respectively there are very little swets spawning and little to no temptest. I went into creative mode and flew around my entire island and found no cockatrice and only a few swets, I also flew over to a different island and also found little to no cockatrice/swets/tempest (for clarification, I am on normal difficulty). I have made a few worlds seeing if it was just a 1 time problem but it seems to be for every world I create and it keeps happening. -Unavailable URL-

Seems still valid in the latest 1.11.2 commits also.