I can try to find of. We are using much larger units to track human locomotion, which includes accelerometers and gyroshops (weight >50g). These have a very high time-resolution, but I suggest that you use a lighter system build for animal tracking.

James C. Russell var í Føroyum fyri nøkrum árum síðani. Hann hevur gjørt rottu GPS tracking og veit helst okkurt um slíkar loggarar sum tú hevur tørv á

We are using GPS-logger on hare but without GSM-tool. They also include high resolution 3D-accelerometer to identify behaviours. Company is e-obs GmbH in Germany (www.e-obs.de).

Bests Anne

I prefer GPS-logger using the mobile-net (GSM) to transfer the data.

Someone has told me that the GSM technology is cheaper and also easier to use, compare to the collars which use satellites connection to transferring the data.

However, I am new in this field, and have no experience myself using GPS collars, so maybe other technologies can solve my problem as good as those using satellites or VHF technology.

Do anyone of you experience in comparing different technologies, which are used to transferring (or receiving) data from wild living mammals?

You can find compact GPS/GSM modules together with prototype boards, such as arduino (you can integrate all with around 50g). Have a look at SIM808 and also the latest versions. You will need to develop your own compact/customized system (because it is a hare). Really low cost.

Have a look also at different communication schemas (LORA for example).

The sensors will depend on your application. In your case, if it goes throught holes or dense forest, you will not get gps signal most of the time.

HI, I am interested in experience regarding brown hare (Lepus europaeus) tracking devices.

When is the best time to set up a tracking device for brown hare that need to be released from the rearing farm in to the hunting ground.

It is clear before we release him, but there is a fear that he will under huge stress during fastening on. Is there any safe way to do this?

Eydfinn Magnussen Henrique Cândido de Oliveira Magni Mohr