Can cockatiels eat mango?

Yes, in small amounts

Yes, in small amounts. Mango is a good source of beta-carotene for cockatiels, but it is very sweet, so offer a small peeled piece now and then.

Portion: Two or three pieces about 1.5 cm (⅝ in) across
How often: Once or twice a week
Sugar: 13.7 g / 100 g

How to serve it

Wash and peel the mango
Discard the stone
Cut the flesh into bite-sized pieces
Clear away leftovers after a couple of hours

Why

Risks. High sugar content; cockatiels are prone to obesity and fatty liver disease, so sweet fruit needs to stay occasional.

Benefits. Its orange flesh supplies carotenoids that birds convert to vitamin A.

Questions owners ask 1

Can cockatiels chew on a mango stone?

It is better not to offer it. The stone has little flesh left, can harbor mold once it sits out, and fresh flesh is a better treat.

Mango: nutrition per 100 g

Water	83.5 g
Energy	60 kcal
Sugars	13.7 g
Fat	0.4 g
Protein	0.8 g
Fibre	1.6 g
Calcium	11 mg
Phosphorus	14 mg
Calcium : phosphorus	0.79 : 1
Sodium	1 mg
Vitamin A (RAE)	54 µg
Vitamin C	36.4 mg

“Mangos, raw”, USDA FoodData Central (SR Legacy, FDC 169910). Public domain.

Sources & method 4

The sources below discuss mango for cockatiels (or for pet birds generally). Confidence: high. Rated on the JOMIZOO Feeding Scale; when good sources disagree we choose the more cautious level.

Fruits and Vegetables in Birds' Diets — VCA Animal Hospitals
How to care for your pet bird — University of Florida Small Animal Hospital, College of Veterinary Medicine
Obesity in Birds — VCA Animal Hospitals
Nutrition in Psittacines — Merck Veterinary Manual