OK stupid question time.
I'm putting post and rail fencing close to my house as I think that it looks better than wire stock fence. I want the fence to look as unobtrusive as possible so I am limiting it to 3 rails. So it will look like this.
Now I know that I could just tack wire netting to it to stop lambs getting through but, bearing in mind I'm trying to keep it unobtrusive, I will probably run a horizontal strand of straining wire between the bottom and middle rail to stop lambs getting through there.
However, what do you reckon the height the bottom of the bottom rail (from the ground) needs to be to prevent a lamb getting under? If the bottom is 100mm off the ground can they work their way under? What do you think, what is the minimum gap you think a lamb can squeeze under?
Told you it was a stupid question.