Seems like they don't last past 3 ish years.... I lost all my 3 year old ameraucana from the same hatchery over the last winter, and now I'm starting to lose my now 3 year old's from a hatchery. Sigh. I have the adults housed together, no one else is sick. With the hatchery bird deaths I find them dead, they don't look sick up to death, or have any symptoms. Today's almost-casualty I found on her side barely breathing at bed time so I brought her in and put her by the woodstove, at least she can be warm when she dies. Everyone else is fine.
Sigh.
Sigh.