There is some great videos and information about chicken behaviour from
Learning Haven right here as some students and their teacher learn about raising chickens.
And check out their website www.learninghaven.com

www.newlandpoultry.com – suppliers of chickens, equipment, feed and supplies in Worcestershire. 

www.chuxaway.com – suppliers of automatic chicken door openers
(I can give these my personal recommendation, best thing I ever bought. JB, Garden Life Ltd)