It causes nervous system disorders usually seizures. Veterinary care should be sought immediately if you suspect lead poisoning in your bird. A bird's leg band can catch on the cage or other objects causing fractures or dislocations. In smaller birds, leg bands can cause irritation or leg constriction. Check bands for easy movement or remove them if not absolutely necessary.
Some houseplants are poisonous to birds that nibble on vegetation.
Check with your local poison control center or veterinarian to determine if the plants are poisonous. Household fumes can be hazardous to birds because birds are small in size and have very sensitive respiratory systems. You've probably heard stories of old-time miners who used canaries in the mines to detect dangerous gases because the birds would show the effects of gas much sooner than humans. If you notice a strange smell or fumes, remove your bird to an area with good ventilation. Overheated cooking oil, fats, margarine, and butter may create dangerous fumes.