Well today I decided to check my Black60 that I last checked on the 31st. I had filled a 2 gig card and when looking through the photos I found that the card filled up the evening of the 1st. I had a good amount of deer pictures but I am guessing close to 700 photos were blank. The camera is set in the open and no real amount of brush in front of it. I had already turned the sensitivity from high to medium but it hasn't seemed to help. I put an 8 gig card in and put it on video mode to try out. I also lowered it to "low sensitivity" and am hoping this helps and that this isnt a sign of things to come with the Covert. I had had a Reconyx on the same tree with the highest sensitivity and in years of use have got maybe a dozen empty photos. So what exactly are the settings that you guys are using on field edges and how many blank photos are you getting?