Is spinach safe for birds?
Spinach ( a no no since 1950 in animal husbandry ) is also a source of Fe and will prevent the absorption of Calcium. Yet you have it as a good food for parrots. Dr. Phalen DVM now in AU originally Texas A&M has just finished a paper on this subject. Fe retention disease ...not to mention calcium blocker.....Then Vitamin C In most sources avoid fruit that has it. Oranges for example.