The NZ ones have a 3-5 yr cycle , the longest are some in the US , at 13 & 17yrs , but a lot at less yrs than that
The NZ ones have a 3-5 yr cycle , the longest are some in the US , at 13 & 17yrs , but a lot at less yrs than that
And of that 3-4 yr cycle only 3-4 weeks are spent above ground .Makes interesting reading
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