Accepted Answer

Hello,

You're right that your rabbit is building a nest. Female rabbits pull hair from their chests (and sometimes the abdomen, too) and put it in their bedding to make a soft nest. since your rabbit has been alone, she can't be pregnant. That means she's exhibiting signs of a false pregnancy. Sometimes this happens to unspayed females for no apparent reason. Other times, an underlying health problem is to blame. Hormone imbalances, uterine infections, and tumors or cysts on the ovaries or other reproductive organs can trigger such behavior. You can read more about false pregnancy here

http://www.bio.miami.edu/hare/furloss.html#falsepregnancy

If you're rabbit is undergoing a false pregnancy, you'll want to take her to a vet to rule out health problems. This isn't an emergency situation, so you don't need to do that right away. spaying would take care of the problem.

If you have more questions, just let me know by clicking on REPLY.

Anna

Expert:	Anna
Pos. Feedback:	100.0 %
Accepts:
Answered:	5/8/2009

Pet Expert/Biologist

40 yrs.: herps, pocket pets, rabbits, poultry, dogs, horses. Biology degree. Volunteer vet assistant