I am well versed in coccidiosis and aware that only two strains have blood as a symptom,but if there are no injuries then why take the risk of it being a cocci overload/outbreak? The timeline of a week since new bird was introduced does fit with it possibly being coccidiosis.
Years ago i...
That is a considerable amount of blood,if you cannot find any injuries i would suspect Coccidiosis and the fact that you found some blood beneath roost,esp if you think it may be the new girl. Watch your birds carefully b/c if it is cocci it can kill very fast. If it were my birds,i would start...