LOL, loks like a hen pulled a fast one on you!! I collect my eggs daily as well and my hens are kept in a large run with a house inside that they roost in at night and lay eggs. Well on the top of the house theres a small crawl space that I use sometimes for storage but I have never had any chickens even try to get up there but the other day I came around the corner rather suddenly and caught my new game hen (that also just showed up one day and never left) flying down from up there. I went and got a ladder and looked up there and she had taken vegetables, corn cobs, potatoe peels and 12 eggs she had been stashing when I wasnt looking!