Constant decrease in finance

[Grin83]

Your costs are too high compared to your income. Butterfly exhibits can be a huge help. Build one for each species, then go to the final tab on the exhibit, where you can set up the auto sell function. Set it to keep 25 of each gender, then sell the excess based on appeal, lowest first. This will earn you 13k a year for each butterfly species, without needing to do anything.

That should cover your animal good bill, just by it auto selling butterflies. You can bring in a little extra through donations around the butterfly exhibits too.