Cockatiels can eat honey. They love honey. It may surprise you, but honey is used in many cockatiel treats (to hold seeds together). So, yes, cockatiels are allowed to eat honey - in moderation, though!
Yes, cockatiels can eat corn. Not that they will like it, and it may take them a while to get used to it if it is a major change in their diet but corn will not hurt a cockatiel.
Yes, cockatiels can eat bread. However, they should be supplied with plenty of fresh water at the same time, to balance the dryness of the bread.
Cockatiels can eat celery, however, it has no nutritional value - it is mainly water. Don't give your cockatiel too much, everything has to be eaten in moderation.
Yes
Cockatiels can eat crackers, except they make them put on weight. They have no nutritional content in crackers for cockatiels. Despite the movies where birds eat crackers, cockatiels eat vegetables and seeds (as a treat). Your cockatiel should eat everything in moderation. As for crackers, as an occasional treat - cockatiels love them!
Yes as long as it doesn't have a lot of butter or anything
Well you open the bag of sunflower seeds and feed them to the cockatiels. They will then eat them.
They can't eat salmon.
Yes.
Cockatiels can eat millet and they love it! It is a treat, though, and should be given to them occasionally to avoid overweight cockatiels.
Before they have been weaned, cockatiels can eat wheat-bix and other soft foods. After they are weaned, cockatiels can eat anything that adult cockatiels eat. Cockatiels love lettuce! (Not too much - it acts as a laxative in large amounts). Your cockatiel will also enjoy carrot and brocolli. DO NOT FEED YOUR COCKATIEL AVOCADO OR TOMATO!
no. only spinach.
Weiros (Cockatiels) eat a combination of seeds and fresh fruit such as apple,grapes,watermellon(rearly) and pear and they enjoy sun flour seeds as well.
You can eat honey whenever you please. There is no specific time you must eat honey.
Cockatiels eat paper to keep themselves entertained. Usually they don't actually eat it, they just tear it up and chew on it. If you are uncomfortable with your cockatiels eating paper, you can try to distract them from the habit. Putting more toys in the cage might help.
Do not feed your cockatiel salmon. Cockatiels are herbivorous and should not be given meats of any sort, even fish.