We recommend weighing your birds because as caged birds and clipped parrots, they get far less exercise than that of their cousins in the jungle so obesity is not uncommon in our exotic birds. Another added benefit is making sure they are healthy.
Although small birds are hard to weigh on a gram scale because they are generally kept flighted and are not hand trained it is the converse for parrots. We strongly recommend you weigh your bird routinely at the same time of the day if possible.
Exotic birds are prey and are very skilled at hiding any illness almost until it’s too late.
The ONLY way to tell if your companion bird is not well is weight loss in grams every day. Here is a guideline for adult birds so keep in mind babies still on formula can surpass these numbers but will lose 10-15% of their body weight during the weaning process but should gain it back in their first year. These are ranges, and of course, each bird can vary slightly due to frame size or how many were born in his or her clutch but if you are weighing regularly you’ll know baby’s own baseline weight.
I couldn’t possibly list all species and subspecies here but these are the most common birds we see: