Aaron, Wish I could. It may have been in one of the two mags I read- Gleanings or ABJ. All I know is I was intriqued by it, that the bees are resting in an ice cocoon. If I recall correctly, it was not in contact with the bees but a short distance away and usually formed at night. I almost did not include it in my post because I anticipated the question. Maybe someone else recalls it. It was several years ago that I read it. It was a sort of throwaway in the article. Nothing more was made of it than it was observed. I am not sure if there was a supposition on insulation or not, but it seems intuitive. Bill T Bath, ME Aaron Morris wrote: > > Can you give a source for this?