We’ve lived in Rancho Santa Fe for over 20 years, and love it. You can check the zip code (92067) out at sdlookup.com to see what’s available, along with the other areas you’ve mentioned. (Not sure about the “chicken” thing in RSF. It would probably vary by property location within the area, and most realtors could probably answer that question.)
Even though we’ve also lived all over the world, we always come back to our home here, for all of the reasons you’ve mentioned.