Dear colleagues,
I’m curious if you can direct me to resources methods for triangulation with Motus. I have searched the literature and this group’s discussions, but I can’t find much. Any guidance would be appreciated!
Thank you!
Sincerely, Ray
Ray,
Are you interested in triangulation with receiving stations or on the ground tracking? I haven’t done a recent lit search but the only paper on the former that I’m aware of is Lenske’s. Alternatively, Paxton uses trilateration which could potentially be adapted. Based on Lenske’s paper and my experience, the stations would have to be close to get simultaneous detections.
If you’re interested in tandem ground tracking we were able to use a simple linear regression between signal strength and known distance to estimate distance of individuals not sighted. I could send you more information on that if it would be helpful.
Sincerely,
Luke DeGroote
Avian Conservation Scientist
Powdermill Nature Reserve
Carnegie Museum of Natural History
724-593-5521
Lenske_et_al-2018-Journal_of_Field_Ornithology.pdf (477 KB)
paxton_et_al_2022_ecolevol.pdf (638 KB)
Hi Ray,
The big challenge (as far as I understand it) for triangulation is the highly variable signal strength depending on bird movement.
You may be interested in this PhD that used a local array of sensorgnomes to track flock membership of chickadees:
https://ir.lib.uwo.ca/etd/8310/
Take care, Scott
Hi All,
This group triangulated and provides the package they used in their methods - but it may be that triangulations were calculated from handheld tracking rather than from the Motus network. Maybe worth asking them though.
Best,
Jamie
Hi all,
Hi all- I wanted to follow up to hear if anyone was successful with this?