I bought "Farm House" brand free range, cage free brown eggs today at the supermarket. It says they come from Cal-Maine Inc. I called them and they said their hens are not exposed to Roosters. The closest Trader Joe's is 3 hours from me 

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Your chicks look beautiful.
From what I've read, it's hit or miss. Some of them carry them and some don't. I haven't tried the Whole Foods store yet. I understand the one near me carries brown fertile eggs. My TJ only carries white.
Deb