Matteo - documentation of snakes:
Vipera berus #1, female - head portrait
Matteo - documentation of snakes:
Vipera berus #1, female - pattern (specimen with colors similar to those of a male)
Matteo - documentation of snakes:
Vipera berus #1, female in alpine habitat
Matteo - documentation of snakes:
Vipera berus #2, female - pattern
Matteo - documentation of snakes:
Vipera berus #2, female - head portrait
Matteo - documentation of snakes:
Vipera berus #3, male - portrait
Matteo - documentation of snakes:
Vipera aspis francisciredi #1, female in anthropic habitat on alps
Matteo - documentation of snakes:
Vipera aspis francisciredi #1, female - head portrait
Matteo - documentation of snakes:
Vipera aspis francisciredi #1, female - pattern 3/4
Matteo - documentation of snakes:
Vipera aspis francisciredi #2, male - pattern closeup
Matteo - documentation of snakes:
Vipera apsis francisciredi #3 , male in plain wood habitat
Matteo - documentation of snakes:
Vipera aspis francisciredi #4, male - pattern
Matteo - documentation of snakes:
Vipera aspis atra #1, female in alpine habitat
Matteo - documentation of snakes:
Vipera aspis atra #1, female - head portrait
Matteo - documentation of snakes:
Vipera aspis atra #2, male - pattern
Matteo - documentation of snakes:
Vipera ammodytes #1, male - pattern 3/4
Matteo - documentation of snakes:
Vipera ammodytes #1, male - head portrait
Matteo - documentation of snakes:
Vipera ammodytes #1, male on alert in its karst habitat
Matteo - documentation of snakes:
Vipera ammodytes #2 , male hidden in its karst habitat
Matteo - documentation of snakes:
Vipera ammodytes #2, male - head document photo
Matteo - documentation of snakes:
Vipera aspis atra #3, female in its habitat (near a stream)
Matteo - documentation of snakes:
Vipera aspis atra #3, female - pattern
Matteo - documentation of snakes:
Vipera aspis atra #4, female - pattern
Matteo - documentation of snakes:
Vipera aspis atra #4 , female - portrait (with tongue)
Matteo - documentation of snakes:
Vipera aspis atra #4, female in its habitat
Matteo - documentation of snakes:
Vipera aspis atra #5, female - pattern
Matteo - documentation of snakes:
Vipera aspis atra #6 , female - pattern
Matteo - documentation of snakes:
Vipera berus #4, female - pattern
Matteo - documentation of snakes:
Vipera berus # 4, 5, females - comparison between two patterns
Matteo - documentation of snakes:
VIpera berus #4, female - portrait
