I have two 9-10 yr. old Budgies that have always been in great health so far. The last couple of days the poop in the cage has taken on a pale greenish, chalky color. Still firm---not runny. There is also normal looking poop too so I'm not sure which bird it is.There hasn't been a change in their diet so I don't think that's the cause. They both seem to be fine otherwise.
Any ideas what might be causing it? Should I take them to the vet?












