From David Ridpath, Drybrook, Gloucestershire, UK
I was intrigued by the reports of raptors propagating wildfires by moving burning sticks (13 January, p 4). However, I would not class this as tool use. It is better described as an advantageous modification of the animal's environment. This puts the raptors, I suggest, in the same category as burrowing owls, who bring dung near to their burrows to lure dung beetles to within easy range of capture.
