One Of The Most Efficient Ways To Capture Fawns For Research Is To Use A Vaginal Implant Transmitter (VIT). Adult Does Are Captured In Winter, And A VIT Is Inserted In The Birth Canal. When The Doe Gives Birth, The VIT Is Pushed Out Of The Doe’s Body, And The Temperature Change Triggers It To Begin Transmitting A Signal That Alerts Researchers, Who Can Then Track The Signal To The Site Of The Birth.