Froggy haven.

If you have one of these weather stations and find it's running rather awry with its transmissions then have a look inside and check the housing for the transmitter (the thing with what looks like a spring poking out of it).

Chances are that you may have a collection of froggies resting up over the winter dry season.
I've found them in two units locally that I've rendered nicely serviceable again in the last fortnight.