Find a Blue Freshwater Pearl.
Old Hillpaw has about a million chickens on his farm... but that's not what he REALLY loves.
I saw. He collects blue feathers.
I don't realy know where to get a blue feather around here, but I do know where to find some blue pearls!
Check the oysters in Cattail Lake to the northwest. I'm sure a blue pearl will look nice with his feather collection!