Black Adder

Black Adder

Observation - Black Adder - UK and Ireland. Description: Approx 70cm by 2cm mature snake basking in bracken. Very dark - impossible to see markings except general look of regular spots/marks down side body. I am looking for confirmation that this is a dark adder. Definitely no daignostic yellow/orange collar of

Approx 70cm by 2cm mature snake basking in bracken. Very dark - impossible to see markings except general look of regular spots/marks down side body. I am looking for confirmation that this is a dark adder. Definitely no daignostic yellow/orange collar of grass snake. Do all mature grass snakes have a pale collar? If not, can anyone tell by head shape? Don't be influenced by the adder beside it in the picture. We find grass snakes and adders basking near eachother at this site.