but the tadpoles, just as the adults do, brumate during the winter months... the tadpoles here "appear" around the same time as the adults, without a great effort on my part I'm not likely to see them in February as easily as someone further down south... and of course the time will vary depending on just where you are along their range.
All a matter of semantics I guess in just what you mean by being able to see them all year round. 
Gerry


