What time of day and year do frogs and toads croak the most?

["im_rawes" im_rawes]

I'd like to record the croaking of frogs and toads around London. There are=
 a few marshy areas where I'm pretty sure they can be found.

But what's the best time of day and year to hear them?

Oddly enough I can't seem to find a clear answer to this elsewhere, except =
that overcast days are more promising than sunny ones.

Ian

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London Sound Survey http://www.soundsurvey.org.uk

Supporting Deafness Research UK http://www.deafnessresearch.org.uk