Something to remember any time you see sudden food aggression. It is often because they started eating more (which is not at all uncommon on a seasonal basis - consider what time of year it is now
). When they start eating more and cleaning their plate or nearly cleaning their plate when they do not normally, it is almost as if they start worrying that they are going to run out of food. Now, you and I both know that we would never let our gliders go hungry, but they don't always know that. Once something like that starts, one or more gliders starts to hoard the food and then they actually do
go hungry, because the one hoarding doesn't eat enough, since he/she is trying so hard to keep the others from eating. This only fuels their hoarding (vicious cycle).
You need for them to understand that they will always have plenty of food - to help with this, there are several things you can do together, once the behavior has started;
-Start feeding them a larger amount of food.
-Make sure their food is in their cage before
they wake up, so they never worry about being hungry.
-Feed in separate dishes, at least as many as you have gliders - different stations at different heights work best.
-Use glider kitchens for each station, this helps shelter them from being seen or being able to see the other gliders in the cage while they are eating.
-Realize that this will take time, their hoarding behavior did not happen overnight, and it can take 2 weeks or more for the behavior to return to normal and the hoarding to stop. (The longer the hoarding and aggression has gone on, the longer it typically takes to resolve).
-Watch their appetite levels on a regular basis. I find that if they are eating more than normal for two days in a row, I will add a little more food. If I wait too much longer to add food (once I notice their appetite has increased) they often become food aggressive and then it takes me a week or more to resolve again.
I hope this all helps, good luck!