Christa took the words right out of my mouth!!! As much as they love to play inside of and underneath of small, dark places, you just can't allow them to do so if you don't want to end-up with them starting to become extremely hormonal; Budgies in-particular are extremely prone to constant and continual hormonal periods, and if your Budgies is definitely a female Budgie, then this is a HUGE NO-NO, because it's going to eventually result in her constantly laying eggs, and with that comes a ton of serious health issues...
Budgies and Cockatiels are the two species of Parrots that are very prone to chronic egg-laying, with them laying clutch after clutch after clutch of infertile eggs, and once they start it's very difficult to get them to stop. And with Budgies who are chronic egg-layers, each clutch that they lay back-to-back-to-back is typically larger and larger, eventually getting to the point where they are laying up to 13+ infertile eggs in each clutch...And this can quickly become life-threatening, because they quickly become Anemic, Malnourished, and Undernourished, because it's impossible for them to eat enough food and take-in enough nutrition to keep-up with the energy and nutrients they are expending by constantly making Follicles and Eggs...Their beaks eventually turn to a dark-blue tint, as does the bare skin on their feet/toes and their legs, and this is because they are so Anemic. And eventually they either die from malnutrition, not because you aren't feeding them a good diet, but because they just can't keep-up with replacing the nutrition they are expending constantly, OR they become Egg-Bound, which is ALWAYS 100% FATAL without immediate medical intervention, usually major surgery that they don't survive...
***So, the bottom-line is that for the health and well-being of your female Budgie, and so that she lives a nice, long, healthy, happy life that is in the span it should be, you need to remove ANY AND ALL small, dark places that she can get inside of or underneath or behind, both inside of her cage and when she's out of her cage in your house. (pet Budgies in captivity should easily live into their mid-teens if they are fed a healthy diet, given lots of exercise and mental stimulation and direct-attention, and they are kept from constantly laying eggs and/or feeding chicks if they are with a male and the eggs are fertile instead of infertile like your Budgie will start laying).
***This means NO Beds/Triangle Bed of any kind, No Tents, No "Huts" (Snuggle Huts/Happy Huts), Hammocks, Boxes of any kind, etc. inside of her cage, along with NO Bedding/Nesting Material inside of her cage or on the bottom of her cage that she will think of as "Nesting-Material", such as any Rodent-Bedding, Wood Chips, Corn-Cob Bedding, Crushed Walnut-Shell Bedding, Shredded Paper Bedding such as Carefresh, or anything similar in the bottom of her cage, along with no shredded paper or newspaper...She should only have Newspaper, Butcher's Paper, Cage Liners, etc. under the grate in the very bottom of her cage to collect droppings and that she cannot get at or have access to.
***Your bird can happily sleep standing on a perch and needs no "Bed" of any kind either...Budgies absolutely LOVE all kinds of toys, especially the cheaper, plastic toys that have bells on them, so you get-off each with Budgies, lol, you don't need to buy the $20-$30 a piece toys that they only shred apart after a couple of hours like the large parrots need and run through...My Budgies just love the $2-$5 a piece plastic bird toys that Petco and Petsmart both sell.
We're only telling you this because we want your Budgie to live a long and healthy life, and we certainly don't want you to suddenly come home one day to find your Budgie either already dead, or even worse is finding them in horrible pain, constantly "straining" themselves because they are trying to lay an infertile-Egg that they can't lay because either it's way too big to pass, or because it's not dropped into the correct area (her Oviduct) but rather dropped into her free-Abdominal space, where the only thing that will save her life in either of these situations is immediate open-abdominal surgery that costs thousands of dollars and they often die during anyway. Usually Euthanasia is what is suggested for Egg-Bound Budgies unfortunately, because it's horribly painful for them to suffer through, and the surgery often fails anyway...No one should have to go through that with their birds, and the best way to avoid this happening is to keep your Budgie from becoming hormonal in the first place as much as possible, and the quickest way to CAUSE THEM to become hormonal is by providing them any type of Box or any of the other things I listed above...
