A St Valentine's Day Mystery

[flick]

As you may recall, ever since GB's lodger moved in and showed himself partial to GB's feed, we've taken to hanging the boy's breakfasts from the barn roof overnight. This has been very successful, and we've not had any more go missing (I shall gloss over the times he's eaten through the corners of bags of bedding, Just In Case there was food inside, and indeed the time he ate through the pockets of my hi-viz to get at the treats inside).

This morning, however, Mike found something very odd:


The food inside the bucket hadn't been touched, and there were no bits of plastic to be seen. We are very confused.