Sometimes I read something about fall mating Vipera`s.
But I don`t find anything if these mating’s are successful or not.
From time to time I found young berus in June or July and I think that they are too small for last year Babies.
And I also found some young berus in September and I think they are too big that they are born in August but too small for last year babies.
Two years ago in June I found a female Berus in Tichino/Switzerland (1.300m) that was very thin, it looks healthy and not injured. I thought that she gave birth a few days ago, but of course I was not sure.
Today I found a female in my area, extreme thin, it looks very healthy (high active and very angry) and not injured.
If you found a female like this in August or September nobody have any doubts that she gave birth a few hours ago.
Maybe a successful end of summer mating is more common than we thought, what do you think?