O.K., let's see:
Amount of grains. I actually started with a much higher proportion of grains, different types and of a much, much lower quality than what I am using now (my gloop recipe is and always will be a work in progress) but I have settled for 50% of grains/beans/seeds because it makes for low protein so it allows me to feed it like that during the winter (I add higher and better quality protein items during the breeding season). The main reason for the actual proportion is the final protein content of the meal and nothing else. If I use more, I end up with a higher protein content than what I want for the winter. I don't have (and seriously doubt they even exist) any studies that say that grains are good for parrots or even any papers on it... I think it's pretty much the consensus of all the avian nutritionists that grains are fine for them. They are listed as part of their natural diet in almost any species we keep in captivity and every single parrot food that has been formulated by avian nutritionists and 'experts' uses them so I think it's a matter of 'usual and customary' making it an universally accepted axiom. As a matter of fact and as far as I can tell, avian nutritionists think nothing of feeding them a much larger proportion of grains because even today you see them recommending free-feeding pellets (which are all grain) along some raw produce (and we all know how nearly impossible it is to convince a parrot to eat enough produce when you are free-feeding them protein food) so the percentage of grains in a diet like that would end up been, on a good day, around 90% for sure! Do you have anything reputable that says that grains are not good for parrots? Because, if you do, I would be very interested to see it as I've never found anything anywhere that supports it. Also, what, exactly, is it that you find so offending about feeding parrots grains? You keep on saying that cooked grains are not natural to parrots but, in reality, nothing we feed is natural to parrots, including the diet that you offer. And, although parrots don't eat cooked grains in the wild, they certainly do eat the raw ones and, as cooking them makes them more digestible, I would think that would recommend the practice instead of making it questionable. Now, if the problem is gluten, can you provide anything reputable that proves or even postulates the possibility that parrots are intolerant?
Leaving gloop out - The guidelines that you posted are for ALL food which includes meat and fish and, because of that, they give the maximum period of time before the most perishable of items start growing bacteria in large numbers - think of it as the lower common denominator. But that doesn't mean that EVERYTHING becomes dangerous after two hours (for example, you can store eggs at room temperature for a week without a single problem and bread for days, and even milk can be left outside the fridge for an entire day before it sours). I've done lots and lots of research on this and never found anything specific to grains but the links I gave you were all relevant because they deal, specifically, with the only real danger to cooked grains left unrefrigerated: Bacillus cereus (there was no part of them that was more important than the rest and that's why I did not point out a specific section of them, they should be read in their entirety as everything there is relevant in one way or another). There are other sources of food poisoning but they are all either caused by contamination, lack of adequate hygiene or improper canning techniques (things like E.coli, salmonella, botulism, etc) so they don't really apply if you use soap and water and avoid cross-contamination. If you read the links I provided (two of them from the government, one from Wikipedia given as general information and the last from a medical source with all the references under it so, yes, all the sources were there clearly stated and, with the exception of Wikipedia, all of them were reputable), you will see that there are two forms of this bacillus, the one that causes diarrhea and the one that causes vomiting although, generally, when they talk about this bacillus, they lump the symptoms from both forms together (which is what you quoted) but only the emetic form survives cooking. Both cause short-lived problems (only 24 hours or so) and are never fatal unless the immune system is compromised and treatment is not prompt (which was why the one year old baby died). There were several cases back in the 70's in USA but all were found to have been caused by Chinese restaurants cooking enough rice to last two and even three days that was left unrefrigerated in the kitchen all day and all night so we are talking high temperatures and exposure of over 24 hours in every case (the gloop stays out for less than 12 hours, the birdroom is never that hot -not even in the summer- and, in truth, the birds don't even touch it in the afternoon, they all rather wait for their dinner).
You talk about "Your parrot cant tell you when they are not feeling tip top, and it cant be good for them to be bombarded daily with bacteria grown in mixtures that sit around all day" but, as I said before, the gloop doesn't sit around an entire day and there is no 'daily bombardment' of bacteria (a bit hyperbolic, isn't it?). Bacterial food infections don't work that way, there is no cumulative effect (I don't think there is a cumulative exposure effect on any bacterial infection, if there is, I haven't found anything that even mentions it) so even if they eat a bit one day, it won't be there the next. We all consume bad bacteria daily but a body with a healthy immune system kills it on its own (either gastric juices, good bacteria and, sometimes, even other bad bacteria). Food poisoning happens when the body ingests such a large amount of bacteria in one sitting that it cannot fight it on its own but, when that happens, the symptoms appear either within minutes (as it's the case with the emetic form of the B. cereus) or within hours and up to two days for other types of bacteria. So, the fact that the birds have never gotten sick might not convince you but, according to science, is incontrovertible proof that it's fine. If the gloop had enough bacteria to make them sick in any one day, all of them would come down with the same symptoms at the same time (vomiting and/or diarrhea and/or loss of appetite and/or lethargy, etc). As a matter of fact, I fed gloop exactly this way when I had the chlamydiosis epidemic without any kind of bad consequence so, even with a depressed immune system, their digestive system was able to deal with whatever amount of bacteria was there with no problem so it was obviously low enough to be no problem.
Promoting the diet and the leaving it out. I don't actually 'promote' anything, I simply tell them what I do, what has worked for me for many years and what I've learned from research and experienced BUT I also always tell people to do their own research. If people want to be extra careful and throw away all the bird's food after two hours, it's fine with me as long as they don't leave it without any food for hours. But I think it's entirely unnecessary - and that's the only thing I tell them and nobody has ever come back accusing me of causing their bird food poisoning so I guess it works for them, too. People seem to be obsessed with bacteria nowadays... it's like bacteria has become a bad word and exposure to it a sure dead sentence - everything is 'antibacterial', children are not allowed to play in the dirt any longer, you have to wash your hands or use the hand sanitizers every time you touch anything, etc. etc. But if all that was really necessary, humankind would have become extinct thousands of years ago and, in my personal opinion, the only thing you achieve when you do this all the time is end up with a weak immune system.





