Celery is a safe, hydrating vegetable for birds, and the leaves are especially good for them — there is just one small preparation tip worth knowing.
The short answer
Yes — birds can eat celery. It is hydrating and harmless, and while the stalk is mostly water and light on nutrients, the leaves are genuinely nutritious. Celery makes a fine addition to the fresh-food mix.
Watch the strings
The one thing to know is that celery's tough, stringy fibres can be a choking hazard for a small beak. Slice the stalk thinly across the grain to cut the strings into short pieces, or simply offer the leaves, which are safe and more nutritious anyway.
How to feed celery
Wash it, then offer thin slices or chopped leaves. Celery can be given fairly often as part of a varied vegetable mix, alongside more nutrient-dense veg like leafy greens, carrot and bell pepper.