FR,
I gotta laugh at this one. I agree on much of what you have said regarding egg laying, nest selection etc., so when I received a gravid female several weeks ago, I set her up in the largest setup I had available (4' x2')to try (as best I can) to offer the nest conditions I think I have harvested from your posts.. Just before she shed I prepared the whole enclosure with ~4" of nesting material and thermal and moisture gradient: 85 degrees wet to dry substrate on one end and to room temp (72-73)wet to dry substrate. the substrate is covered with cardboard. In addition I included my standard rubbermaid tub containing my standard nesting mix of wrung out sphagnum moss, one at each end. The enclosure is kept dark.
Well, I hypothesized I would find a clutch of eggs somewhere in the middle of the cage after day two post shed. What I have today( day 7) is a female hunkered down in a rubber maid tub preparing to lay her eggs.
We could yammer on for days about soil particle size and oxygen tension and moisture content and egg physiology, but she chose the best site, the variable being the enclosed space,maybe a little tactile security. It is my fault she did not choose to nest in the middle of the enclosure. It is also my fault she has chosen to nest in the rubbermaid. So, I think a properly prepared nest will work no matter its relative size or location. note I did say proper, which includes darkness, maybe a choice of sites, etc., but in this relatively simple "test" rubbermaid won.
Do I think snakes can determine those factors (particle size leading to a particular oxygen tension and moisture content)? Yeah. Where do you find most eggs? I believe in organic material or sandy soil that allows required conditions for development. Also I think pythons that coil around their eggs and "thermoregulate" are really controlling those factors. I can successfully incubate an egg in a fairly wide range of temps but within a narrow range of humidity/air.
-just an observation.
daveb



