Friday, March 17, 2006
Getting your groove on
Steve Holzman and Paul Sykes have written a good piece about measuring woodpecker groove marks on trees with dial calipers. You can read it here. They mention that PIWO's and IBWO's grooves look pretty much the same, but the IBWO's are a tad larger with anything over 3.8mm being the magic number. I reckon it's time to hit eBay for a slightly used lineman's climbing kit and a dial caliper!