Original sentence: These birds are considered by many to be a nuisance , mainly because of the large volume of feces they produce, and like other water fowl, they also frequently walk with their young across roads, creating traffic tie-ups
Edited sentence: These birds are considered by many to be a nuisance, mainly because of the large volume of feces they produce, and like other water fowl, they also frequently walk with their young across roads, creating traffic tie-ups