Getting 1 rabbit means you have not "blanked",nothing worse than having to tell your mates you had a blank last night.
I was out with Amy last night,we walked 11 fields and only saw 2 rabbits,she missed the first one even though she took a few clumps of fur out of it.
It wasn't untill we got into the last field that she had her second run which she caught. Then again if she had missed it,it might not have been the last field.