Today, the gundog whistle is essential kit, but look back to a century ago and all that is to be found clamped between the owners’ lips are pipes. David Tomlinson wonders if we are over-reliant on gundog whistles. For more on gundog training, read 9 gundog training tips from The Field for our essential advice. I recently looked through a fascinating series of photographs of field trials, taken in the early years of the past century. Though old and faded, most were remarkably sharp.