Here are a couple of photos of NeLiSh, my clockwork (at least so far) monitor. For the past two springs she has cycled exactly two weeks, to the day, after her first meal coming out of winter. This year is no exception. I started warming the pair up almost three weeks ago and started feeding them a little over two weeks ago. Two days ago (exactly two weeks after her first meal of spring) she refused food - wouldn't even flick her tongue at it. That evening, when I came home from work, she was still out of her log and lying around like this.

The other clockwork thing about her is that on most nights in spring or summer (cycling and mating times the significant exceptions) she heads for her log a few minutes before the basking lights switch off. This photo was taken at 8pm, a couple of hours after the basking lights were switched off (there are only flourecent ambient lights on at the time the photo was taken).
Last night, out again.

This morning, she refused another meal. I suspect they'll start mating tomorrow, so hopefully I'll get some shots of that.
SHvar keeps telling everyone that wintering doesn't trigger mating. He's right, it doesn't, but warming them up after wintering sure as heck does 
A disclaimer (very important on this forum): Before everyone starts an internet screaming match about the pros and cons of wintering monitors, I'm not saying that it is necessary to cool them to breed them (it isn't), nor am I saying that it is necessary to cool them at all (it's up to the individual keeper). It's something I happen to do - so don't feel the need to try this at home.

