system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] How does the Hogwarts support hundred of owls?

In Harry Potter, it seems like the majority of students have pet owls. Starting every September, hundreds of owls are brought to Hogwarts, and presumably left to hunt most of the time. How do they grounds support this sudden influx of predators. Even the forbidden forest must get hunted clean after a few months, with so many owls hunting the same areas. I imagine that there aren't usually that many owls concentrated in one forest. 

Plus, especially in the winter prey must be scarce, there's no way that there's enough to go around. If they're fed by the school, where does that come from? Is Hagrid importing then slaughtering barrels full of bunnies and rodents?

Also, what happens if an owl flies into the forbidden forest and is caught by some giant spider? Does Hogwarts have a policy for pets that are killed at school? Owls can be expensive for some families. 

Edit: Dammit not "The Hogwarts" I meant the Hogwarts grounds in the title.
gpt
someone walks upstairs each day and casts the refilling charm and the scouring charm then after that 10 second chore is over they go back down stairs.

unless of course it is filches job then it takes hours of back breaking work, which he does because he doesn't have any other choice.

edit, owls won't eat pet food but they will eat raw meat and i'm almost sure there is some charm to keep meat fresh.