One of the interesting things that I have learned is that some trees produce leaves or fruits or even flowers that birds feed on but sometimes while it produces a flower or fruit that is safe for the bird to feed on other parts are toxic to them. This is important to consider when the bird is bred and raised in captivity because its parents don't get to teach them about this and they don't know it on an instinctual basis. So a bird raised in captivity my still chew on parts of a tree or plant that is poisonous to it. It is up to us to be aware of these things which is one of the reasons that the list of poisonous and non poisonous items in the diet and nutrition section is so helpful for me. It lists safe and unsafe trees and stuff and sometimes it tells me that while the tree and its wood and bark are safe the fruits and leaves are not, or even the other way around. Believe me when I say that I was surprised to learn this type of thing, I thought that if the bird ate the fruit then the whole tree was safe, but then I learned that this was not always true.
With birds you have to be very careful about UV or full spectrum lights. The ones for reptiles or plant may blind your bird or seriously burn the bird. There was a posting on a different forum complete with pictures of a bird that nearly died from exposure to a reptile UV light from the burns that it received. For a bird you need to make sure that the light is 94+ CRI and has a K Temp of 5000 to 5500 degrees with a UV rating of 2 or less. Any thing stronger is dangerous for the bird. I have one that I use on overcast days, you know the days, where it is all gray outside like it is going to pour down heavy rain at any second but doesn't. But I never allow my birds to get any closer than 3 feet to it.