Figureȱ 2.ȱ Graphȱ plottingȱ skullȱ max.ȱ widthȱ againstȱ totalȱ lengthȱ (billȱ tipȱ toȱ rearȱ ofȱ skull)ȱ forȱ skinsȱ ofȱ threeȱ species of Campephilus woodpecker in the NHMUK collection. Also shown are analogous measurements fromȱ theȱ unidentifiedȱ NHMUKȱ skeleton,ȱ forȱ whichȱ aȱ correctionȱ factorȱ upwardsȱ ofȱ 17.28%ȱ hasȱ beenȱ madeȱ to total skull length, to account for its missing rhamphotheca (see text for explanation), thereby making its measurements directly comparable with the others. in The conundrum of an overlooked skeleton referable to Imperial Woodpecker Campephilus imperialis in the collection of the Natural History Museum at Tring

Figureȱ 2.ȱ Graphȱ plottingȱ skullȱ max.ȱ widthȱ againstȱ totalȱ lengthȱ (billȱ tipȱ toȱ rearȱ ofȱ skull)ȱ forȱ skinsȱ ofȱ threeȱ species of Campephilus woodpecker in the NHMUK collection. Also shown are analogous measurements fromȱ theȱ unidentifiedȱ NHMUKȱ skeleton,ȱ forȱ whichȱ aȱ correctionȱ factorȱ upwardsȱ ofȱ 17.28%ȱ hasȱ beenȱ madeȱ to total skull length, to account for its missing rhamphotheca (see text for explanation), thereby making its measurements directly comparable with the others.