Well one of my favorite rangers used that method long time ago to collapse warrens ;-) Seriously I don't know the best method. When we started rabbit control in 2008 / 09 after I lobbied for funding, some of the warrens were huge with over 30 active entries mainly in the horse holding paddocks and generally lower slopes and drainage lines; the paddocks were destroyed and various means used to kill the rabbits. We repeated every season, I trained up to 58 volunteers a season to map with Garmin GPS until 2012/13 when budget wasn't come forward. There was a significant drop in numbers judged by drop of rabbit signs and new recruitment of trees. I invited CSIRO experts on site, worked with Fenner school academic and students who studied (lack of) tree recruitment and documented the rabbit damage to argue the case.
@waltraud I will vote for the politician that lets you Parkcarers do the rabbit control, as long as they also let you use explosives to destroy warrens located among vegetation or rocks (like PCS did until the hospital demolition disaster) because that is the most environmentally friendly way that works efficiently.
Hi @waltraud , I think this is a bit different to YTBC sign. But on inspection of the real thing, if it is YTBC, it should be possible to see borer sign in the wood inside the damaged area. Or if we do get photos of Krefft's it would be fairly conclusive, I think.
yes recorded multiple times including with Field Maps; a notorious site easy to dig, lots of rabbits signs in the surround including digging, buck heaps etc