Andy, thanks a lot for your response.
Few days ago I've sent a email to Karkloof Conservany, but no response until now. Maybe they are very busy.
According to Ebird, Wattled and Blue Cranes should be there, but q my question is also what would be the best time to go there. Callan Cohen use in his book "Southhern African Birdfinder" as time information,"during the winter or the spring time is the best time. For me it's not clear, if does he means European winter,(December) European spring time (March, April) or Southafrican spring time, which is I think September, October.
Mietek