Nice shot man!!! Thats a vivid look at a blackneck, thanks for sharing. I had a young red-sided hanging out by my garden pond in the front yard last year but havent seen any this year, and funny thing is this year I have tons of toad tadpoles in both the front yard and back yard ponds, but no garters,kinda disapointed. Coarse maybe the reason i have tons of tadpoles is NO GARTERS 
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Jeff Benfer
1.0 pastel Python regius
1.1 mojave Python regius
0.1 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
2.2 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
1.1 triple heterozygous for amelanistic,carmel, and stripe Pantherophis guttatus
0.1 anerythristic motley Pantherophis guttatus
0.1 Okeetee Pantherophis guttatus