Some observations, province of Friesland, Netherlands, 2015

[Berislav Horvatic]

By a destroyed habitat.

I don't get it. Snakes just have to come out of their refuges, sooner or later, whether the habitat had
been destroyed or not. They have to thermoregulate, eat, drink,... After all, they are certainly not
AWARE of the destruction of their habitat, so how could THAT issue be any kind of motivation to THEM?

[Jeroen Speybroeck]

I'll try again.

Detectability can be higher in a destroyed habitat.

[GertJan Verspui]

pfffff, seems like a '1 + 1 = 2'


Thanks Jelmer, great photos and interesting observations!

[Berislav Horvatic]

Detectability can be higher in a destroyed habitat.

That's highly plausible. But also has nothing whatsoever to do with either "forcing" or stimulating the survivors
to come out of their refuges. See above:

Data which have been collected so far suggest that this resulted in a relatively high survival rate.

Couldn't this be biased because they're more or less forced to come out?

I'm not a mindreader, I just read what people have written - and react/respond to THAT. A simpleton, sorry.

OK, I got it: They have to come out for their own reasons, and then we spot them more easily in a destroyed
habitat.

[Jelmer Groen]

Couldn't this be biased because they're more or less forced to come out?

It sure does make things more complicated.

Thanks Jelmer, great photos and interesting observations!

Thanks GertJan. Looking forward to your your tripreport (Israel)!