For this achievement: "You only need to find and scan all Cordava's Journey logs; not every single scan there is. There are a total of 19 encrypted logs. 7 of them are story related and unlock automatically. The remaining 12 you need to find and scan yourself. To check which encrypted logs you've scanned and which logs you're missing, check Cordova's Journey (
bottom entry) in the Databank."
Added by TA member Scaluh1: "For those having issues with Shyyko Bird: I had the same issue where the scan wouldn't show up upon first arriving to the location. However, going a bit past it to the meditation circle, and resting prompted the scan to be available after backtracking to the bird. Hope this helps." A video for their location can be found here:
Primary credit for this solution goes to Mr. Vuule's Youtube channel.