Complex sentence: The first plan was discourage the public from feeding the birds, while having a worker go to the pond every once ina while and shoo the geese away, then it was decided to install devices that annoyed the geese.
Split into simpler sentences: The first plan was to discourage the public from feeding the birds while having a worker go to the pond every once in a while and shoo the geese away. Then it was decided to install devices that annoyed the geese.