Sprouted seeds are appreciated, and parrots should be given fresh greens or fruit every day, but not directly from the fridge. Suitable fresh food includes tomatoes, apples, mango and cherries. You can also find chickweed growing wild in Britain, and birds appreciate this. You need to read up on the requirements of your particular parrot species, since their need for fresh food varies, but generally it's important that all fresh food is in good condition. Parrots may try eating human food, but some foods, like avocado, chocolate, and dairy products are not good for them.
Some house plants are also poisonous, as are some plants found outside, like Virginia creeper.
Parrots also need a mineral stone or cuttlefish bone, and they like to nibble at spray millet. They may eat some of the sand at the bottom of the cage to aid digestion, so if you use sandpaper sheets to line cage base, they will need a small dish of sand or special bird grit. Remove seed husks twice a day to allow the bird to get to the whole seeds. Fresh drinking water should always be available and should be replaced at least twice a day. You can help keep your bird fit by keeping the cage clean, making sure your parrot has fresh food every day, giving it baths at least twice a week, making sure it isn't bored, and having it checked by a vet at least once a year for parasites or other problems.