gps

I am looking for some sort of tracking and security for my whitetails inside my high fence. I see the gps collars but would rather have a tag in the ear like EID. EID would be great if I could get 1/2 mile out of it. So a gps tag in the ear with a decent battery life would be optimum. Cost...

I want to track and be able to find a couple yearlings I am fixing to release to the larger high fence area and wanted to know what the best gps collars or devices are for deer. I see all the dog collars but they seem to be large and require charging every couple of days. Need small and long...