I'm going to wait a month too, and I will hopefully be adding another one soon, i'll let you know
They are not the brightest though are they?
I have had mine for 8 months, and TODAY they found the brook/river that flows 10 yards from the front of their house
(I say found, I actually mean got picked up and deposited in said brook, then realised what was there and went back later ALL BY THEM SELVES!!)