I just showed Dad 5 youtube videos of different spur shortening techniques, so now he's feeling more confident about assisting with the procedure.
To make things below more clear, I'll divide the spur components into the "horn" (the dead finger-nail type portion) and the "quick" (the tender fleshy living cone around which the spur horn grows). If someone knows better words for these parts, I'm all ears.
Video One: simply trimmed back the crispy horn part of the spur a bit with dog nail trimmers. No filing. Fast and simple, but where to stop cutting? How often is repeating this procedure necessary? And I'd worry about jagged edges.
Video Two: used a saw blade on a Dremel to cut through both the horn and the quick to completely remove both at about 1/4" from the junction with the leg. No blood, but that wouldn't that permanently alter the bird? And the bird seemed to be uncomfortable with that procedure. I gather the theory with this one is the blade moves fast enough to heat up and cauterize the cut. I found it hard to watch.
Video Three: followed the PoultryPedia site's hot-potato technique. This one seems to generate the most blood, which is what I'd expect from a warmed-up quick. Also, the horn part got a little mushy, so it didn't seem to twist or snap off very easily. Lots of blood-stop powder and waiting for the bird to stop bleeding.
Videos Four & Five: the spurs were not treated with heat first and were simply popped off by gently squeezing and slightly twisting the horn around the quick with pliers until it released. Very little indication of pain from the birds, very little blood, a one-person operation. Video Four demonstrated just putting the bird back down on the floor of the coop and called it good (plus suggested using the horns in craft projects
). This was on an 8 yo bird which had had the spurs removed once before. She was able to use her fingers to remove one of the spurs. Video Five was the same technique, emphasizing to gently grasp the horn with the pliers, and stating there is sometimes "one drop" of blood. He also suggested isolating the bird for a while and keeping an eye on it in the (rare) case there might be some infection. These two videos were Dad's favorites, and mine.
I could put the links to the videos here if people are curious about which specific videos we watched.