For this, I recommended using a pouch instead of a nest box. I have found that gliders tend to be more protective over a nest box than a pouch. I also recommend hanging the pouch on the cage door, being careful the pouch doesn't get caught in the hinges. This is recommended because they are big and roomy, they each can attach to the cage, and can be taken out quickly and easily. Another way to help the bonding process is to place a shirt that you have worn through the day and night, on top of the cage in the morning when you take it off. This cover shirt will belong to your glider at this point. Don't wash it or clean it. You want your glider to get used to your scent.
The first thing we would do is give it time. They need time to get used to their new environment. There are a lot of new scents and sounds in their new home. Do your best to try to protect your new glider from anything that may startle or frighten it. Until you get to know your glider and learn what may startle him, it’s best to try and have him associate you with only positive things. Avoid sudden moves toward him or around him.
There are many things you can do to build trust. The more you do with your glider, the better your chances are. The one thing you must remember is that gliders are very fragile and have a very tender heart. They cannot be trained with any negative feedback. Never do anything to your glider that may make him feel that he isn’t completely safe with you. This means that you should never hit, pop, or tap your glider. Don’t confine him or wear gloves when handling him. They can't get used to your scent if they can't smell it. These things only make the glider feel more and more defensive, and that is not what you are trying to accomplish. We will go into detail about different ideas and suggestions that have been used and proven effective. Just remember…give them time. In some cases, the trust becomes apparent immediately. In other cases, it may take a long time. It all depends on you, the gliders history, disposition, and personality. Consistency is very, very important.
If you can't approach the glider without him crabbing and lunging, leave him in his cage for the first 3 days. Let him get used to his new home. Let him learn to trust his new home. Talk to him often and softly and give him a treat every time you talk to him. This teaches him to associate your face and voice with good things (treats). If he crabs, let him. Stop what you are doing and wait for him to stop, but don't move. Just continue to talk to him in a calm and soft voice. Don't show him you are afraid, remember, you are trying to gain his trust. I have found that the chicken with apples baby food or something with a smooth consistency is very good for training. Dip your fingertip in it and offer it to them in their pouch. Do this often! The more often the better. You can also offer them meal-worms, veggies, or pieces of fruit. Do this as often as possible for the first 3 days. Do NOT try to remove them from the cage or disturb them for any reason for these 3 days. As they are licking your finger, pet them with your other fingers. You will be done with the basic trust process, when you can place your hand into their pouch and eventually just let them lay in your hand.