Can cockatiels eat blueberries?

Yes, in small amounts

Yes, in small amounts. Blueberries are a good fruit for cockatiels, with fiber and flavonoids, but their sugar content means a few berries at a time is enough.

Portion: Two or three blueberries, halved
How often: 2–3 times a week
Sugar: 10 g / 100 g

How to serve it

Wash the blueberries
Halve them so they are easy to hold
Choose fresh berries, or thaw frozen ones completely
Take away uneaten berries after a couple of hours

Why

Risks. They are still sugary. Fruit is high in natural sugar and should be fed in limited quantities.

Benefits. According to Merck, blueberries provide fiber, vitamin C, vitamin K and flavonoids and are accepted by most birds.

Questions owners ask 1

Do blueberries stain cockatiel droppings?

They can tint droppings blue or purple for a short time. That is harmless, but contact your vet if droppings stay discolored after you stop feeding them or your bird seems unwell.

Blueberries: nutrition per 100 g

Water	84.2 g
Energy	57 kcal
Sugars	10 g
Fat	0.3 g
Protein	0.7 g
Fibre	2.4 g
Calcium	6 mg
Phosphorus	12 mg
Calcium : phosphorus	0.5 : 1
Sodium	1 mg
Vitamin A (RAE)	3 µg
Vitamin C	9.7 mg

“Blueberries, raw”, USDA FoodData Central (SR Legacy, FDC 171711). Public domain.

Sources & method 3

The sources below discuss blueberries 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.