Can I feed pigeons some uncooked rice at the park?
That does not sound like a good idea. Are you sure you want to do this?
What's the worst that could happen, I'm pretty sure this whole city is full of pigeons.
Even if there are too many pigeons, feeding them things that could kill them is not good. It is cruel to kill animals for entertainment.
I didn't think far enough ahead but I guess that is true.
It is, you never know what is going to make animals sick but uncooked food is more likely to make people and animals sick. You should be careful about what you feed wild animals.