Could you post a link to the series you watched online?
Thanks,
There is some good info on this at ALBC - with pics
http://albc-usa.org/documents/ALBCchicken_assessment-2.pdf
Great link

I just started this type of evaluation and will be ordering trap nest fronts for my nest boxes as well. I watched this series on line along with several others.
There is so much to consider when breeding and it makes it challenging

Trisha