A search for "ducks" provided so many hits as to be confusing. Narrowing it down to "ducks" and "feed" provided several good threads, including this fine discussion on webfooted flying rats, err, ducks: More about waterfowl on your pond

"Live like you'll die tomorrow, but manage your grass like you'll live forever."
-S. M. Stirling
[Linked Image from i.pinimg.com]