Hello

[ronott1]

Your in Arizona so it is also likely that the chickens died from fungus. It is in the air there and chickens from other areas can be less resistant

http://www.merckvetmanual.com/generalized-conditions/fungal-infections/coccidioidomycosis

 

[BlueBaby]

Hello elo, and welcome to BYC! I'm sorry for the loss of your chicks. Would you happen to know where CBL ordered the chicks from? You are welcome to join us here on this site in our Arizona states thread.

https://www.backyardchickens.com/threads/arizona-chickens.31227/page-6159