Slithering to Extinction?

Some rather shocking predictions from a study by 200 'experts', reported by the Zoological Society of London (http://www.guardian.co.uk/environment/2013/feb/15/reptile-species-face-extinction?INTCMP=SRCH) where it appears that 20 percent of the world's existing reptiles are facing extinction.Some species are more critical than others with half of the freshwater turtles being at imminent risk and many lizards (especially anolids) are threatened by deforestation followed by agriculture.So habitat loss appears at the root of the disappearances. All this represents real losses as reptiles are an important group of organisms with the ability to thrive on a much lower calorie intake than a mammal or bird of similar body weight. You could argue that, when ambient temperatures are relatively high and stable, they are more efficient than the warm-blooded vertebrates.