Hi there.

I have a situation in hand: My female sugar glider looks like this...
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Background:
Cage is the normal big cage. Nestbox house.
Currently 3 sugar gliders in the cage - male, female, and 13-day-old joey.
There are other cage colonies in the room - 7 other big cages with a pair of sugar gliders in them. None, including the male mate and the new joey is suffering from the "situation".

Has been this way since mating time, I think. Is it possible of a rough mating happening - the male bites the neck and overgrooms the area? Because judging from the position, the female cannot overgroom that area by herself.

Another question: How long does it take to get back the back of the neck coat? My other sugar gliders have shiny and healthy coats due to good eating habits.