Acetone
Alcohol
Algae Toxins
Amphetamines
Ant syrup or paste
Antifreeze
Arsenic
Aspirin
Bleach
Boric acid
Botulism (from food)
Camphophenique
Carbon Tetrachloride
Charcoal fluid
Chlordane
Clinitest tablets
Copper, brass, and silver cleaners
Corn and wart remover
Cosmetics
Crayons
DDT
Deodorants
Detergents
Dishwasher Detergent
Drain cleaners
Epoxy glue
Fabric Softeners
Fertilizers containing nitrates
Firecrackers
Floor Polish
Fluoroacetates
Furniture Polish
Garbage
Gasoline
Gun cleaner
Hair permenants
Hair Dye
Hexachlorophene
Indelible Markers
Insecticides
Kerosene
Lead
Lead-Based Paint
Lighter fluid
Linoleum
Lye
Mercury
Model glue
Mothballs
Muriatic acid
Nail polish
Nail polish remover
Nicotine
Nonstick cookware
Oven cleaner
Paint thinner
Paint remover
Perfume
Photographic solutions
Pine Oil
Rat or Mouse Poison
Red Squill
Roach Poison
Shaving lotion
Shellac
Shoe Polish
Sleeping Pills
Snail Bait
Solder
Spot remover
Spray Starch
Strychnine
Sulphuric acid
Suntan Lotions
Super Glue
Table salt
Thallium
Toilet Bowl Cleaner
Turpentine
Warfarin
Wax (Floor or Furniture)
Weed Killer
Wild Mushrooms
Window cleaners
Wood Preservative
Zinc

Sources:
 
"The Bird Care Book" by Sheldon L. Gerstenfeld, V.M.D.
"The Parrot in Health and Illness" by Bonnie Munro Doane
"The Complete Bird Owner's Handbook" by Gary A. Gallerstein, D.V.M.
"Avian Viruses:  Function and Control" by Branson W. Ritchie, D.V.M., Ph.D.
"Avian Medicine:  Principles and Application" by Ritchie, Harrison and Harrison