[Cazador]

Hi Hans,

I wrote a detailed reply earlier, but somehow I managed to lose it. I've got to type fast, so please pardon any errors. I'll use the term "vomiting" in this case since it refers to the expulsion of partially digested food. Regurgitation normally applies to food in the esophagus or undigested food that has recently entered the stomach.

I realize that not all of the following apply to your situation, but I want to be thorough in case anyone else has similar problems. Temperature is normally the first and easiest thing to check and correct. If it is too cold, snakes are unable to digest properly and will sometimes vomit. Other conditions that typically lead to vomiting include:

Stress (recently adding another snake, recent relocation, too much attention and inadequate hiding places)
Over handling (particularily right after a meal)
Overeating (too large of an item or too often)
Overdrinking after a meal
Dehydration
Sudden temperature changes
Parasitic infection
Bacterial infection
Food that is swallowed backwards can irritate the GI tract (like spines on fish, or even fur pointing the wrong way).
Food that is thawed, refrozen, thawed, refrozen, etc.
Blocked GI tract
Pregnancy

If the outside temp is 31C, and the light is still on inside the enclosure, it may be a bit too hot. I'd start by taking a hard look at those temperature changes.