Chazza wrote:1- Should loris be housed alone? If not, how many per cage?
2- What would the minimal cage contents be? (I'm thinking several types of perches, at least one shreddable toy, and at least one wooden toy for beak health)
3- What type of wood is safe? Maple? Balsa?
4- How much nectar should the loris be fed per day? Currently they get one small bowlful.
5- Is Clay Cal recommended? For all birds? Can it be left in a dish so that the birds can ingest it when they want too? Or should it be sprinkled on food?
6- Thoughts on grit?
I can't tell you how happy it makes me to see this thread.

Liz has some great advice. I don't know the answer to some of your questions but I'll respond to some of them.
1. I've never owned Lories but whenever I've seen them in captivity they've been housed together. I've watched them cuddle and preen each other so they seem to really enjoy the company of other Lories. That being said, I don't know how many you can house per cage, and you have to make sure that birds "get along" before you try to put them in a cage together as members of the same species will sometimes be aggressive with each other.
2. Every bird should have a few different types of perches of different diameters, and preferably of different materials. There are wooden perches, rope perches, and "sandy" perches designed to help keep their nails trimmed. Both of my birds really love their "boing" perch (one of them sleeps on it) which has a bell on the bottom and looks like this:

It swings around so more playful birds will really love it.
As for toys, the material and size of the toy depends on the bird. Some birds love to chew, and some don't. One shreddable toy and one wooden toy is a good start. Birds also like bells. Consider rotating the toys on a weekly basis (and by that I mean each bird has a total of maybe 5 toys but each only has access to 2 or 3 at a time). The birds will be less likely to get bored with the toys.
Consider either a "Happy Hut" or "Birdy Buddy" which is a fuzzy toy that birds like to cuddle. My conure sleeps in his "Happy Hut" and when I was younger I had a Parrotlet who would sleep cuddled up to this "Birdy Buddy." I've seen many birds over the years in pet stores who are also cuddling those same toys. There are different sizes (and colors) for different birds.


3.
Here is a website with a list of "bad wood" and "safe wood". There are several different types of maple and they are safe
when the bark is removed. The bark can harbor dangerous fungus which is the reason why it's safer if the maple has no bark. Balsa is safe but depending on the bird it might be soft enough that they want to chew it instead of perch on it.
4. I don't know how much nectar Lories need per day but someone will probably stop by and answer that for you.

5. I'm unfamiliar with Clay-Cal but I do know that some birds in South America eat clay. I've never used it with my birds but they are on a high-quality pellet diet (Harrison's) and they get fresh fruit and vegetables every day as well so I'm not worried about supplementing minerals. However, for birds in a pet store whose diet might not be as varied it could be a good.
6. Most birds don't need grit.