Some advice please....
Our local DMG is doing a deer impact survey and deer count for a local landowner.
The site is approx. 800 Acres of 80% woodland, 20% fields for sheep/cattle, organically farmed and sympathetic towards conservation objectives.
The site is more or less round, surrounded by other farms with arable fields and sheep/cattle.
Our group has divided the site in 8 sections.
I spent 2 hours around on the boundary of one of the sections and, at my sitting up position, could see approx 1/2 Mile of the boundary, where I counted 7 Roe deer I could all see at the same time.
In my Report to the Project Manager I stated that, on the assumption I could only see 50% of the deer present in that 1/2 mile of boundary, it was a reasonable estimate that there could have been some 25-30 deer per mile of boundary grazing in the surrounding fields at that moment. As the total boundary is some 7 Miles I estimated some 175 Roe deer on the site. Not believing my own (logical) figure I reduced my estimate to some 100 animals.
And I haven't started about the Muntjac yet, of which there are many many more..
I did, btw, get an estimate from the D.I. who looked at the deer impact on the site. Based on the 10% of the woodland surveyed, the estimate was 300-500 deer.
I am now asking the more experienced members of this site to pick some holes in those assumptions and come up with some (structural) comments please.