View Single Post
Old 07-11-2012, 03:17 PM
Latro Latro is offline
Join Date: Mar 2002
Location: Netherlands
Posts: 3,230
Originally Posted by Inner Stickler View Post
Laying eggs is less stressful on the mother but giving birth to live young means less danger from predators and weather. If you'd like to read more about it, I found this article on the subject.
Interesting, thanks.

But the article itself is not so sure about the advantages of live birth.
The one convincing advantage is , as you mentioned, temperature control.
A womb can keep a more regular temperature than an egg in the cold or heat.

I don't see how protection from predators is easier. Both still need a nest/denn and protection by the parents. In the case of eggs both parents can protect the eggs. The highly pregnant mammal female would be at a disadvantage, I would say.
Although she is still more mobile than an egg, to get away from danger.

What the article seems to be saying is that it just kind of happens. Sometimes eggs stay inside longer and longer.

Last edited by Latro; 07-11-2012 at 03:21 PM.