I got my first flock this past May.  A scientist lady gave them to me when she lost her government grant money.  Well, she gave me 7 of her 600.  Anywho, I brought them home to my new farm that I had just moved into.  One of the 7 was a Roo that was much younger than the hens, and had not begun 'acting' like a roo.  One of the hens was broody from the first day.  I was learning all over again how to care for chickens.  They were allowed to free-range for the first month until I got annoyed with poo all over hte place.  So one day I noticed one of my Delawares missing.  I also noticed egg production had decreased dramatically.  After about a week, I was in the hay barn with a pitchfork, clearing out old hay.  I heard a "cluck, cluck".  I looked behind an old bale of hay and saw my missing girl sitting on top of 13 eggs.  I picked her up (with some effort) and moved her back to the coop.  I collected all the eggs.  She was bound and determined to get back to that spot, even though there was nothing there anymore.  Hubby finished fencing in a chicken run, and she finally gave it up.  Believe me, you'll know broody when you see it (or feel it). LOL!