We had a 3 year old canary, sex undetermined. Bought a new canary 10 days ago. Put it in the cage with older canary and she tried to pluck its tail feathers so we put her in her own cage. She built a nest and stated laying eggs. Woke up Sunday morning and the older canary was laying dead in the bottom of its cage.
It had not been sick and was acting fine. Is it possible the female had some kind of disease the older one contacted and if so, wouldn't she be showing signs of illness? She is acting fine, not sick, eating well, and sitting on her eggs. If that's the case, wouldn't the older canary have started acting sick? There were no signs of illness and it had eaten good, drank good, acted the same.