a birds breastbone should be like a tegel chicken, lots of meat either side
if it is like a yatch keel do not purchase
sress is the biggest killer of birds, they use up their vitamin b's and go into paralysis
remember birds have a high metabolism and can go from being well to dead in as little as 4 hours
barbary doves are pretty tough usually
sorry you had to go through this, but a lesson may have been learnt for the future
like fish you should try a quarantine period