I don't do a head count but I scour the run every single night with a flashlight. I look in every corner, every place they could roost or hide, even under my ramps. Two times I've found an EE roosting on the rungs of these old chairs I have for them to sit on and I've found my Seramas roosting on beams of their run patio. My husband thought I was crazy for doing this until he ran across one of my little OEGBs dazed and confused in the run while I was on vacation. She is gray so he thought she was a rock. Turned out she had an eye infection and was blind so couldn't figure out where to go or what to do. Now he never questions me when I say "double check the run before you lock up". He even asks "did you look over there". I don't want to be sorry in the morning, ever.