Wet poop is entirely normal when they eat a fresh food diet. It's the drier poop that is not normal even though most people believe it is. When an animal consumes a diet of 85 to 95% moisture and have a high metabolism (digesting food superfast to the point that parrots poop what they eat less than 2 hours before), wet poop is always the result. People believe that a drier poop is normal because we used to feed them mostly seeds (10 to 12% moisture) or pellets (max 14%, usually around 10%) not realizing that even the seeds we fed were dried so as to extend shelf life but, in the wild, food is not on shelves and everything is wet.
His coming close to you after he ate is a VERY good sign because their natural interacting time is precisely mid-morning (after eating and before their noon rest) and mid-afternoon (after their noon rest and their dinner).
If you cover their cages with a black-out material, it's OK. But don't think that because the parrot is sleeping, he is not being exposed to light because although this is true of mammals who only have photoreceptors cells (the cells that react to light and send the information to the brain) in their eyes, birds have them also inside their brains and these register light even when they are asleep because, as they are dependent on light for their endocrine system, nature gave them very thin cranial bones and light goes right through them to reach the deep-brain photoreceptor cells (is that cool or what?!).
Don't worry too much if one day he doesn't eat his usual portion but don't give him a choice of fruits or veggies. I have found that choices don't really work out for parrots because they end up eating mostly the same thing every day (whatever happens to be their favorite). And, if you observe parrot flocks feeding in the wild (I was born and raised in a South American country where there are wild parrots), you see them eating the same thing until they finish it - they all descend on a tree with fruit and they eat and eat the same fruit until there is no more. They don't do 'fruit salad'
Give him one single kind of fruit, one single veggie and one single green (try raw broccoli, they all like it), a different one every day. For example, one day you give him a quarter apple, a large slice of a red pepper and a large piece of broccoli, the next you give him 1/4 orange, about 1/5 of a zucchini and a large leaf of Romaine lettuce - see what I mean? This will ensure that he eats a large range of produce which, in turn, ensures that he will get all different kinds of vitamins and phytonutrients (things like antioxidants, enzymens, etc). And mix the colors, like if one day you give him a blue fruit (like blackberries -blue and purple are the most nutritious 'colors' in produce), you give him a yellow veggie (yellow zucchini), the next day you do a white fruit (apple) with an orange veggie (butternut squash). There are studies that tell us that combining colors results in a much higher degree of nutrition.As to his eating better when you give it to him by hand in front of his beak, some birds are like that and require a slower approach to attain a good diet. Isis (female African Red Bellied) was like that but, eventually, she started eating them on her own.
The thing with parrots is that everything takes foooreeeveeer, especially when it comes to switching them to a good diet... I had an African Grey that took five years to try her first blueberry even though she was getting them once a week, saw all the other parrots eating them (parrots are 'monkey see, monkey do' and that's why the best way to get them to eat something new is to eat the same thing you put in his cage in front of them) and all birds love them. So don't get impatient, just keep on insisting and it will happen.
You are doing GREAT and will end up with a fabulous companion, healthy and happy! He was lucky to end up with an owner who worries and is willing to put in the study, work and time into giving him a good life. You would be surprised at the number of people who claim to love their parrots and feed them wrong because it's easier, never even taking the time to research and find out if what they are doing is right or not.
