Taisha, do you really believe animals at that zoo starve to death because of employees stealing their food? Don´t be too guilible to anti-zoo propaganda.
I remmember when Prague zoo had a large problem with employees stealing food and many other stuff and selling it outside in early 1990es. But the whole system silently calculated with it and ordered amount of food in eccess and there was enough for animals left. No animal starved because of it, actually the proportion of obese animals was too big then. At that time, it was not easy to get competent people to work in a zoo, low wage and very low social status, the zoo was always short of employees (that is in stark contrast to today when zoos can´t save themselves before job applicants). It was only director Fejk who decided to combat it. Whole first year he took over he fighted against this practice, and only after he kicked out the whole management team he won. He had to kick out all curators too, nevermind their degrees and science work, they were part of it too, even if rather through their silent acceptance. For employees there is now an unwritten rule they can eat as much they want on their workplace, but to take anything out, it would be considered a theft.
If the part of the article is right and if this not just a rare occurence, I would suggest to the director the same way. To change all the people on leading positions and make clear to common employees it is not silently tolerated anymore.