Owning a parrot takes a lot of time. Parrots are not domesticated like cats and dogs, so they have to be worked with on an individual basis. If you buy a tame, hand reared bird, you can be assured that a lot of time and effort went into shaping his little personality. To maintain the fruits of all that labour, you have to be able to handle and interact with your parrot every day.
Aside from that, daily cage cleaning also takes up more time than many are willing to spare, also parrots need a minimum of 4 hours out of cage time, that means supervised out of cage time, they need your full undivided attention too, parrots are well known for being destructive, this can include wallpaper stripped, doors, skirting boards, curtains, blinds and wooden frames chewed, parrot poop on doors, floors etcetera, parrots are not really for people who are 'house proud' or for people who don't like mess!
You should be absolutely sure that you are able to devote enough time to maintaining a parrot before buying one. Also going on holiday can be tricky as who is going to care for your parrot? You'll have to put up with some noise. Sure, some can talk but all of them can scream, chirp, cackle, screech, tweet, or coo, whistle amongst other things. Your parrot will probably make a variety of these noises, and it may not always be at a time when you want to hear them.
If you want to own a parrot, you'll have to figure out a way to cope. Parrots also bite, never think 'if' you get bitten always think 'when' I get bitten and a parrot bite can be very painful, remove chunks from your body, remove finger tips, break bones etcetera. You may have to adjust your eating habits too. So you like ready meals, convenience food or microwaved meals? Your parrot cannot survive on the same seed or pellets everyday. Your parrot needs fresh fruit and vegetables and will rely on you to cook for him/her.
If you are going to invite a feathered friend into your home to become one of the family, you owe it to your parrot to provide nutritional meals. Also very important is that your parrot will feel like one of the family if he/she gets to eat what you are eating within reason ( chocolate, caffeine, avocados are absolute no nos for your parrot). This may require that you reconsider your own eating habits. Also you cannot leave food lying around the house as parrots will help themselves..
Don't expect your parrot to be a social butterfly. You may well end up with a parrot that is completely tame when you deal with him, but refuses to tolerate other people. While there are certain species that are more prone to becoming "one person parrot" than others, it can happen to any parrot, particularly if only one person cares for and interacts with it.
If you are getting a parrot for your family, it's imperative that everyone learns as much as they can about it, and participates in its care and maintenance. Otherwise, your parrot may decide to play favourites, which can lead to sore fingers and hurt feelings.
If you are prepared to deal with all of the issues on this list and more, then a parrot may be an ideal companion for you. Remember, the more research that you do before you get a parrot, the better off you and your feathered friend will be.
Adapted from About.com pet birds