>>I think this 1% survival rate is in reality an impossible thing to know.

>>To do this count right, one would have to fence in (over head, too, for hawks and other birds)several very large habitats all the same with the same ratio of predators to prey, same water and other resources, etc. Then one would have to count every single snake and every single predator (don't forget parasites!) Also the weather for each habitat would have to be the same. If there was a road going through the habitats, one would have to have the same amount of cars with the same type of drivers (both those who would on purpose drive over a snake and those who would avoid hitting it)....in other words, the variables that would impact the accuracy of such a study seem overwhelming.

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>>Bob/Chris



Your working way to hard.

Estimation is the way to go;

You need and estimate on how many adult snakes per Sq. mile;

lets say 20

50% are female; =10

lets say, avarage of 10 eggs once a year per female; = 100

2 years to adulthood; x 2 = 200 babies per 2 years.

200-20 adults = 180 missing snakes over a two year period.

180% of 200 = 90% of 100

So I guess There estimate was a bit off!LOL (Their is no wrong answer)

so lets estimate only 10 out of 100 snakes survive to adulthood.

wasn't sure if I did The math right on the 180% of 200 = 90% of 100. lol

Bob B
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R.Bichlers Colubrids

http://www.webspawner.com/users/rbichler/index.html

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