Sometimes, when a cockatiel is sick, he will bob his tail. If you notice this sign, it may be time to take him to the vet. Another indicator your bird could be sick is that he sits. He'll either hunch down on the perch or sit on the bottom of the cage. While these signs aren't necessarily "gestures," they can also indicate sickness. For instance, your bird may sneeze, get extra sleepy, or lose his voice. He may also may eat more or less, or he may suddenly drink more water. Finally, his droppings may change in appearance (color) or number.
لاحظ الهزات السريعة للذيل. تنبه لجلوسه. اعرف العلامات الأخرى للمرض.