Good Morning Tammy ,
Before I head off for work I wanted to leave this info for you . The following is courtesy of the House Rabbit Society or HRS.If this works great but if in the end the problem just will not clear then the best would be to see the Vet to test for any medical casues. I am told that in many cases though fecal with the consistency of a soft putty or mud is usually diet related. A true case of liquid stool though with the consistency of water is cause for a Vet trip right from the start. Hope the following helps ,again it is from the HRS. Take Care ;
(HRS Info On Poopy Bottom )
Often a rabbits "poopy bottom" is caused by a diet that is too rich. We find that cutting back on the pellets and increasing their intake of mixed hay helps tremendously. Although rabbits love the gourmet blend pelleted food, (with seeds, nuts, etc), it is not a healthy choice for your rabbit. The most important part of a rabbit's diet should be UNLIMITED hay. This includes Timothy, oat, orchard grass, Bermuda grass and alfalfa hay.
Rabbits should also have at least 3 different types of fresh vegetables each day, such as parsley, romaine lettuce, cilantro, kale, carrots,etc. See diet links for recommended quantities.
If you live in San Diego, you can purchase large boxes of freshly-mixed hay at various locations throughout the county (see "hay sources" in this website). If you're not in the San Diego area, you can inquire at a feed store and see if they will sell you a flake or two from a bale.Or, you can purchase hay through mail order from Oxbow Hay (
http://www.oxbowhay.com), or American Pet Diner (
http://www.americanpetdiner.com).
On a hay and veggie diet, many rabbits need little or no pellets in their diet. If you do want to continue feeding her pellets, make sure it is a brand high in fiber or for adult rabbits, try the Timothy pellets available from Oxbow or American Pet Diner. If your bunny has been eating pellets, don't make the change to a hay/veggie diet too abruptly. Start by giving her unlimited hay now, but introduce the veggies slowly, and begin to wean her off the pellets or cut back considerably once you are sure she is eating a lot of hay
Be sure to read the many articles available about rabbit diet on this website as well as the National HRS site (
http://www.rabbit.org).