A Lot!
My husbandry has improved so much since when I first got my chickens. By gosh the way my chickens were treated was so so bad before I went on BYC. 
How I found it might you wonder? I kept on looking up how my little precious Dragon an EE passed and kept on finding BYC. I thought that it was something like Reddit and I wanted a real answer so I ignored it for a month, I got frustrated with it. 

 Eventually caved in and joined a year ago, bejeezum, I was a bad owner. 

I had no roost, my chickens would pile on top of each other at night, their feathers were always broken and ratty. I never understood my chickens, now I understand their body language and what they say. When they got hurt or injured I thought they just die or they live, now I'll try to save them going down kicking and screaming, I have now saved so many chickens because of BYC. I have learned about eggs and have been able to save chicks. I have learned about the rooster ratio and that impulsive buying chicks is not ok. I have also learned about genetics and how genes carry on. 
And the biggest thing, I have learned about an amazing community filled with chicken addicts that grab new people and make them join their ranks, never to escape again without a mountain of knowledge. I ain't ever leaving here, I am one of the chicken addicts now. 
