Already a host of the elves is on the way, and carrion birds are with them hoping for battle and slaughter.
"The time has gone for the autumn wanderings; and these are birds that dwell always in the land; there are starlings and flocks of finches; and far off there are many carrion birds as if a battle were afoot!" Suddenly Bilbo pointed: "There is that old thrush again!" he cried.
There are no more uses of "carrion" in the book.
Show samples from other sources
The vultures must see carrion.
The plant attracts flies by smelling like carrion.