Hi again Bob, that are many things to consider when veiwing wild reptiles. Without the knowledge of what the animal is doing, its difficult to make judgements.
For instance, when I worked at the ASDM. They did some work with gilas. They insisted that captive gilas are too fat so they did not feed them. They did hatch one baby in 35 years. hahahahahahahaha.
That statement was meant to be odd. First, you need to compare apples to apples. That is, wild breeding gilas to captive breeding gilas. If you actually did that, you would find they would be very similiar. This is a breeding pair of gilas, I actually watched them breed. The dark one is the female.
A couple weeks ago, I photographed a skinny gravid gila. That indeed is rare. In fact, whether its Mountain kings, gophersnakes, Ridgenosed rattlesnakes or whatever, I find the breeders are normally fat.
In my experience, to find a skinny gravid wild reptile is rare, finding fat healthy gravid reptiles is common.
Your example of seeing skinny reptiles is without direction, you have no idea what those are going to do. I would bet, if any of them produced, they surely would fatten up first.
You may consider that not all reptiles breed every year. With these gilas, they seem to breed three and a half out of five years. That is actually dependant on support, and for the last 8 years we have been in serious drought.
About crepuscular or nocturnal, I am not a fan of those terms. I see too many exceptions. They are active when conditions are suitable. In most species, they are active in the day. But active may not mean out. Reptiles coming out, actually is not part of their normal life. I constantly see diurnal lizards active at night, including monitors. Its about conditions and need. FR
