Budgie weight: a few grams that matter

Budgies hide their symptoms, and their feathers can mask serious weight loss, the veterinary edition of the MSD Veterinary Manual points out. For this manual, an accurate weight is essential for monitoring a bird’s health and recovery.

VCA Animal Hospitals counts a significant change in weight, up or down, among the signs of illness. On a 35-gram bird, losing 3 or 4 grams can’t be seen: only the scales reveal it.

Budgerigar

It measures around 18 to 20 cm and usually weighs between 30 and 40 g, according to a veterinary study published in 2024.

Cockatiel

Larger, it weighs 80 to 95 g on average, according to VCA Animal Hospitals.

These figures are averages: size and bloodline vary from bird to bird. What matters is your budgie’s usual healthy weight, and how it changes.

• The scalesKitchen or postal scales that show single grams; an avian vet recommends them in a World Parrot Trust publication.
• The containerA perch set on the scales, or a small cardboard box whose weight you subtract (the “tare” button).
• The timingThe same day of the week, at the same time.
• Record itWrite down every weigh-in: comparing one week with the next is what tells you something.

Rewarding your bird when it steps onto the scales makes weighing easier over time.

Stable weight

A good sign in a healthy adult.

Weight loss

Check that it is really eating and look at its droppings. A loss that is confirmed should be reported to your vet.

A loss of 10% or more

During a change of diet, the veterinary edition of the MSD Manual says to call the vet beyond a 10% loss: that is 3.5 g for a 35 g budgie.

Weight gain

Often linked to a diet that is too fatty (seed, table scraps) and lack of exercise, according to the MSD Manual.

Vets assess a bird’s body condition by feeling the breast muscles on either side of the keel, on a scale from 1 (very thin) to 5 (obese); for the veterinary edition of the MSD Manual, 3 is right for most birds. Ask your vet to show you how at a visit.

• Limit fatty seed and millet spray, and give vegetables every day.
• Let your budgie fly every day in a safe room with the windows shut: the Royal Veterinary College (RVC) in London recommends daily flying exercise.
• Avoid table scraps, which are often fatty or salty.
• For a budgie that is overweight or underweight, your vet decides on the plan.

Log every weigh-in in MyArk: the weight tracker shows the trend at a glance, for everyone in the household, and a drop of a few grams shows up before other signs.

• A weight chart for each bird, over time
• A weekly weigh-in reminder, shared with the household
• Observations noted in the health record
• The latest weigh-in to hand for your vet