What is wrong with feeding Iceberg Lettuce and Spinach to my birds?
Iceberg lettuce is mostly just water and adds very little nutrition to their diet. Romaine lettuce is a better choice. However, Iceberg lettuce is not “harmful” in and of itself. Spinach contains a high amount of oxalic acid, which depletes calcium in a birds system. However, it also contains many nutrients. Some people recommend avoiding spinach altogether. Others feed it, but only in moderation. It is only when it is eaten to excess that it causes problems. Some other healthy greens: dandelions, chickweed, kale, mustard greens, collard greens, turnip greens, etc.
