What's wrong with Alexander Parrot's thinning

Alexander's big parrot was diluted because of a deterioration or cold.If it is caused by eating spoiled things, the best way is to replace the feed. Usually you must choose fresh ones with grains, and pay attention to save it. Check it regularly if you have deteriorated.In addition, the birds that birds ca n’t eat every day must be cleaned out.If you are cold, pay attention to windproof.