It's an interesting one! I haven't taken any classes but would love to do at least an introductory one. The Great Courses has a good series on moral philosophy and I enjoyed the book How to be Perfect by Michael Schur (creator of The Good Place tv show).
That question in particular would be difficult for me to answer in a purely philosophical sense. I suppose we'd need to define what good/bad for the environment mean etc.
The birds are fed, is that good for the environment? The birds are part of the environment, so yes I guess so.
Are the birds being fed appropriate food? We'd have to ask the professor.
Are at least some of the birds invasive or causing some other trouble in the environment? Have to gather more information.
Perhaps by feeding the birds, they are not eating as much other food like insects, which can cause pest issues?
I like to think your professor would grade on both your questions and your answers. Do you remember many of the specifics in your answer or any feedback you got?
Exactly, like these guys