You know, a definate majority of the red-sided garters, and brown snakes that I find are females, maybe they are easier to spot because they are bigger, or maybe they travel more, because they need to eat more or cross the roads slower, or maybe the males are more shy and recluse, just ideas. Unless you have noticed scewed sex ratios in offspring favoring females I doubt it is a genetic reason for you recieving mostly wild caught female erys. I think the fact that they need to eat more and so maybe they travel more to do so, may likely be the reason more are seen and thus caught, just a theory.
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Jeff Benfer
gartersnakemorph.com
1.0 cinnamon pastel Python regius
1.1 pastel Python regius
1.1 mojave Python regius
0.3 normal Python regius
1.3 Terrapene carolina thriunguis
2.3 Terrapene carolina carolina
4.1 Kinosternon baurii
1.1 Malaclemys terrapin terrapin
2.2 double het albino and anerythristicThamnophis sirtalis parietalis
1.0 anerythristic Thamnophis sirtalis parietalis
2.3 Iowa snow Thamnophis radix
0.2 het Christmas albino Thamnophis radix
1.1 double het cherry erythristic, albino Thamnophis sirtalis sirtalis
1.1 melanistic Thamnophis sirtalis sirtalis
2.0 66% het snow Thamnophis sirtalis sirtalis
1.2 flame Thamnophis sirtalis sirtalis
1.1 triple heterozygous for amelanistic,carmel, and stripe Pantherophis guttatus
0.1 anerythristic motley Pantherophis guttatus
0.1 butter p.h. stripe Pantherophis guttatus
0.1 carmel stripe p.h. amel Pantherophis guttatus
0.1 amelanistic p.h. carmel,stripe Pantherophis guttatus

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