Answer:

Take a piece of board, preferably one inch thick, five inches wide, and of any convenient length, three feet being a good size.

Drive wire spikes into it six inches long, and have them about six inches apart.

Place the vegetables upon these spikes, forcing them down till they rest on the board.

Set the board in a convenient place and allow the fowls to eat at will.

To prevent the spikes from falling out, another board of the same size may be nailed over the first one, covering the heads of the spikes.