Hey Matheus, how are you?

you should contact https://wildlifedrones.net/ they have rented the equipment (payload and drones) in the past to track pangolins, bats and many other species. But I've heard the they are closing bussiness since Trump's budget cut in the USA since this country was their first client. But I think that they may help you out getting in touch with you with the researchers.

My tech advices are, what's the species? weight? attachment method? how long do you want to track? you should use the higher LOS of the transmitter, 40 Km LOS (Line of Sight) is the higher and since you are interested in tracking fossorial species, the LOS will be affected by the obstacles (ground density, forest density, topography etc), so the LOS will be like 5% up to 10% in the field, its about 200 mt up to 4 Km

If you are trying building up your payload and drone here's a link that may help you out

https://uavrt.nau.edu/

https://besjournals.onlinelibrary.wiley.com/doi/10.1111/2041-210X.13261

I'd second that. Wildlife Drones was one of the early ones doing drone based animal tracking telemetry.  

Hi Matheus,

This may be fortuitous timing. My company, Apicalis Labs (based in Perth, Western Australia), is finalising our low-cost drone-based VHF telemetry receiver, scheduled for release towards the end of the year, but we are looking for testers for the next couple of months. Where are you based and what is your timeline?

Hi Matheus, 

Try Altitude Tracking https://altitudeconservation.com/

There is stuff is way better than Wildlife Drones for tracking multiple VHF transmitters.  Speak with Dr. Chris Muller about their system.

Good luck,

Chris

Vectronic Aerospace

www.vectronic-aerospace.com