We are in the South Texas Coastal Brush Country. I have raised "egg chickens" before on a very small scale, but since moving into a more rural area we decided to go at it. Our first batch is a couple years old and were heavily attritted by a racoon until I ambushed it one night. This past spring we invested in twenty-odd pullets (two have turned out to be cockerels so far) and they are now teenagers and laying fairy and pullet eggs. The planters that I raised chilis in last year have been taken over by wild purslane, and besides putting a bit of it in my smoothies, I've been feeding it out as a treat. The girls all love it, so I was wondering about the "actual factual" of oxalate affecting my birds' eggshells, and I joined BYC.