Be cautious — we'd steer you to other nuts. Macadamias are famously toxic to dogs, avian data is thin, and they're very high in fat, so the conservative call is to skip them in favor of almonds or walnuts.
Keeper's noteIf your bird grabbed a single macadamia it is unlikely to be a disaster, but they don't belong in the regular treat rotation. Reach for almonds or walnuts instead.
What to watch out for with macadamia nuts
Macadamias cause a well-documented toxic reaction in dogs, and while there's no clear evidence of the same syndrome in birds, the lack of solid avian data combined with macadamia's very high fat content makes them a poor risk-reward. With many proven-safe nuts available (almonds, walnuts, pecans), there's no reason to take the gamble.
How to serve it
Best avoided; choose almonds, walnuts, or pecans instead.
If offered at all, never salted, chocolate-coated, or flavored.
Watch for any weakness or lethargy after accidental ingestion.