It happened to our chickens about 2 years ago, up above Valencia. I think a virus spread by the native chickens. They didn't seem so much affected.

 

here all the chickens died, native and introduced hybrid (disease free), all brown bread and all the pigs are dead too

 

Just a thought, have they checked the water source? There have been concerns of late

 

not a snowballs its water, all the native chickens died too, its just like someone hit a switch, most of the native chickens well those that didnt fall are still caught in the branches of some trees.
this has happened several times since I arrived here 10 years ago, and not one single test was ever done, just a shrug of the shoulders

 

Scary

 

You can be sure that even without knowing if they are diseased that they are still sold as meat. That's the scary part.

 

Happens every few years, the joys of raising chickens!

 

what happens every few years ????

 

That anyone raising chickins in this area can expect a complete and sudden die off. its airborn. if you do some searching, you will probably find neibors who lost their birds lately too. one day, you wil have one get sick one die, within a week or two, they will all be dead.

a few yearss later, it comes around again.