Yes — fresh clover leaves and flowers are safe and a natural part of many birds' foraging diets, as long as they're from clean, unsprayed ground.
Keeper's notePick from your own untreated lawn or a known clean source, wash well, and offer leaves and flowers. A nice free, natural forage alongside dandelion.
Why clover is good for parrots
Clover is a non-toxic wild green that foraging birds eat naturally, offering some protein and minerals. As with dandelion, the plant itself is safe — the only real risk is chemical: pesticides, herbicides, or roadside runoff on the leaves.