For anyone interested. Search Amazon for Axis Deer. They have 5 sound files of Axis vocalizations you can purchase for .99 cents each. Amazon has a music app you can download to your phone (free). Purchase the sound files from your phone. Once the sound files have been saved to the amazon music app you can save them / download to your phones music library. Using a Bluetooth speaker you can play the vocalizations loudly from your phone. I plan on trying this next trip to see if any axis respond. Just thought I would pass along. Have been looking for an axis call for a few years now.