You mean Antipodes, right? So the cuckoo brings the Sping there? Here it's more of a swallow thing, although we say that "One swallow does not bring the Spirng". But I just found out that the english saying is about swallows and Summer, hmmm, interesting....
Spring in the Antopodes

There is an old Endlish custom of the letter to the Times annually about the first Cuckoo of Spring....
But, then the Engish are Cuckoo, no?
I thought I just heard the first cuckoo of Spring......