Intercourse the snail!

I think I may have cracked it.
The snails communicate to each other where the good stuff is.
During the night when I can't see them, they go randomly up vertical or near-vertical surfaces.
When one finds things potable or edible, it calls out to the others and they rush over for the pig-out/piss-up.
By morning, they're all either there or still on their way.

Got this idea from the following website:
http://www.applesnail.net/content/ecology.php#communication
where we can read, inter alia:

"Snail-snail communication
"Not much is known about the [sic] snail-snail communication.
"They possibly communicate with chemical substances.
"A strong indication of this is when the female snails are ready to mate, the male snails are attracted to her even in complete darkness".

So they send all the randy sheila snails out, see what they come up with and duly follow.
It's just basic instinct: the eternal quest for a drink, a feed and a fuck.

Sáně