Quantity
For a 30-40 gram budgie, even a tiny fragment of a toxic mushroom species can be lethal. There is no safe amount of wild mushroom for any bird.
Notes
The most common exposure is during supervised outdoor time or in homes where mushrooms grow on houseplant soil. Some potting soils sprout small mushrooms that budgies will investigate and eat. Check all potted plants regularly. Store-bought button mushrooms and cremini are not toxic, but there's no reason to feed them to budgies and they can be confused with dangerous species.
Negative Signs
* Vomiting and regurgitation
* Diarrhea or dramatically abnormal droppings
* Severe lethargy — sitting puffed up on the cage floor
* Tremors and loss of coordination
* Seizures
* Sudden death (with some species, death can occur before obvious symptoms)
FAQ
Q: Small mushrooms are growing in my houseplant pot. Could my budgie be at risk?
A: Yes. Remove them immediately and check daily for new growth. Budgies are curious and will nibble on anything they can reach. Consider repotting with fresh soil or covering the soil surface.
Alternatives
There's no need to give mushrooms of any kind to budgies — they get no nutritional benefit from them. Stick to fresh vegetables like broccoli florets, grated carrot, or leafy greens.
Risks & Disclaimer
If your budgie ate any wild mushroom, treat it as a life-threatening emergency. Try to collect a sample of the mushroom (or take a photo) and get to an avian vet immediately. Do not wait for symptoms. Identification of the mushroom species can be critical for treatment.
