So as not to waste time, let me just say that the inclusion of these photographs on the DPR site is an insult - a slap in the face - to every serious nature photographer, whether a novice, amateur or pro.
CAcreeks: Good to see news items about alternatives to Adobe software. Does PaintShop Pro X4 run on Linux? I guess not. Corel AfterShot Pro does run on Linux (formerly Bibble Pro). It might be a good alternative to Lightroom.
I use AfterShot Pro on linux, and it's great, I shoot RAW and do most of my post processing In After Shot, with any finishing touches in GIMP. Quick, efficient, and very cost effective.