So I have completed the butterfly and shells collections, and the messages says my population limit has been increased, yet I cannot make more babies -> "you have no more housing". I looked for a spot to build another hut or upgrade my current ones but there was not spot. Now today I was playing and some villagers had died so I was making more and somehow I got 42. I think it was triplets but I am not sure, and I still get the message that I have no more housing room. Also there needs to be a way to get the last couple items 'cuz I have had one pebble (rare) and one beetle (uncommon) to find for almost 4 real life days now (2x speed).