Latest project as of July 2023 is counting cows, etc. Lots of good public data. My summary in a spreadsheet can be downloaded here.
Better data, analysis, and write-up are coming.
Kim Hansen, “A cow taking rest,” 2009, Wikimedia Commons, Creative Commons Attribution-Share Alike 3.0 Unported license, https://commons.wikimedia.org/wiki/File:Cow_(Fleckvieh_breed)_Oeschinensee_Slaunger_2009-07-07.jpg.