Alcohol- Parrots metabolize alcohol poorly. Alcohol impairs the brain and as the concentration of alcohol increases in the body it can cause depression, respiratory, coma, and death.

Apples Seeds- Believe it or not, apples - along with other members of the rose family including cherries, peaches, apricots, and pears - contain trace amounts of Cyanide within their seeds. While the fruit of the apple is fine for your bird, be aware that in addition to the poisonous seeds, there may be pesticides present on the fruit's skin. Be sure to thoroughly cleanse and core any apple pieces that you share with your bird to avoid exposure to these toxins.

Asparagus- can cause severe stomach upset in parrots due to the fact it contains Asparagine and is a diruretic.

Avocado -(entire plant and fruit) Contains a toxic chemical, persin, that can cause edema of the throat and chest area, heart muscle failure, fluid-filled lungs and abdomen, and severe cellular damage to cardiac muscle cells and possibly the liver and kidneys.

Caffeine - Central nervous system stimulant. Similar effects as chocolate. Caffeinated beverages such as soda, coffee can be extremely hazardous. Caffeine causes cardiac malfunction in birds, and is associated with increased heartbeat, arrhythmia, hyper activity, and cardiac arrest.

Chocolate- Contains a chemical, theobromine, that stimulates the central nervous system, cardiac and skeletal muscle, promotes diuresis.

Dairy (Milk/cream in large quantities) - Birds lack the digestive enzymes needed to break down milk sugar and milk proteins. Uncultured milk products such as milk, cream and butter should not be fed but yogurt, cheeses and dried milk can be supplemented in the diet in moderation (they are also high in fat).

Dried Beans- Cooked beans are a favorite treat of many birds, but raw, dry bean mixes can be extremely harmful to your pet. Uncooked beans contain a poison called hemaglutin which is very toxic to birds. To avoid exposure, make sure to thoroughly cook any beans that you choose to share with your bird.

Dried fruits (containing sulfides or sulphates)

Fatty or Junk Food (fries, potato chips, doughnuts, fried foods)- A diet high in fat can cause the same problems as in humans: fatty liver disease and high cholesterol leading to cardiovascular disease. High fat in the diet leads to obesity and may result in lipomas (fatty tumors), lipemia (fat in the blood), and hepatic lipidosis (fatty liver disease). Any greasy, oily as butter or otherwise fatty food should be avoided.

Fruit Pits ( Apricot, Cherry, Nectarine, Peach, Pear, Plum seeds) -Contain cyanogenic glycosides resulting in cyanide poisoning.

High sugar food- A diet high in refined sugar is not recommended for the same reasons as for humans. It may also contribute to an environment within the bird's digestive tract that encourages the growth of yeast and bacteria.

Mushrooms - Mushrooms are a type of fungus, and have been known to cause digestive upset in companion birds. Caps and stems of some varieties can induce liver failure.

Onions - While the use of limited amounts of onion or garlic powders as flavorings is generally regarded as acceptable, excessive consumption of onions causes vomiting, diarrhea, and a host of other digestive problems. It has been found that prolonged exposure can lead to a blood condition called hemolytic anemia, which is followed by respiratory distress and eventual death.

Raw Peanuts- The shell can be contaminated with Aspergillus fungus, producing a toxin (aflatoxin, a potent carcinogen). If you feed raw peanuts, get good quality human grade peanuts and do not feed if there is any sign of mold. Shelled, blanched (unsalted, of course) peanut are fine. All food should be inspected and discarded if there is any signs of mold. I preferred as treats because peanuts are high in fat.

Salty food as any chips- They aren’t inherently poisonous, but birds aren’t able to excrete salt very well, so too much salt can make them very sick.