Hello Friends, I am from Kolkata(INDIA), I having 2 Parakeet earlier which were with me from more then 1 years and suddenly 1 died 15days ago and I only left with 1 and he was not looking happy so I added 3 more Parakeet 1 male and 2 female 5 days ago and now the earlier one is behaving strange he only sit in the corner of the cage, and his feathers are little bit away from his body and shaking his body like we do when we feel cold. But the weather is here not so cold or not so hot. can anyone tell me what can be the reason