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Published on Aug 29, 2011
Every year we have swallows returning to breed on the balconies around our apartment house in Croatia. This year we had 17 chicks raised successfully. I noticed this reaction when I was "clicking" one of the dogs to keep him away from a guest's apartment. They kept responding for about as week until they realisede it was not going to get them a meal. It did not work on any of the other broods as the season progressed.