Toys which incorporate food, such as millet sprays threaded into the wood blocks bored with holes for nut treats, are fun and rewarding for birds. Wooden toys which can be disintegrated by busy beaks are also appreciated by our feathered friends. We shouldn't consider a toy chewed to shreds as a sign of destructiveness. We had a call from a lady this month whose veterinarian told her to keep hand-feeding her fifteen month old Eclectus because he did not want it to lose weight. Several times people have called about problems with babies throwing up their food immediately after feeding or even during feeding.
Some people blame whatever formula is being used.
The veterinarians always culture something and blame that. My own feeling is that it may be an irritation caused by either too hot food or too strong chemical sterilizers not completely rinsed from feeding utensils or even ingestion of small pieces of bedding. Consider crop over-filling as a possible cause also. There are many reasons why a slow crop will develop. One primary reason which is almost never mentioned is that the brooder temperature is too low.