furry "dead cat" covers and blimps work best for cutting down wind noise, and a very good spectral noise repair tool, though it's paid, iZotope RX8. There is a de-wind module, but you can also teach it what to repair. I believe Davinci Resolve and Adobe Audition might also have wind reduction... (read more)
I'm assuming that by "sort by frequencies" you mean the frequency of the call itself, not the frequency of the audio recording (for example, a call at 1KHz vs a recording at a sample rate of 48KHz). My recommendation would be to use R (seewave/tuneR) to generate mean spectra of the recordings (... (read more)
I can imagine that almost any device on a burrowing animal would be getting smashed. I'm glad I'm working on an arboreal animal at the moment. Bark is not as abrasive as sand and ice!
Your issues might explain why Milsar were keen to make our units in a single resin cast piece (including... (read more)
We're rethinking the live component of the Build Your Own Datalogger course and would love to hear your ideas.
We initially concieve the office hours as a way to live troubleshoot and offer support throughout the course, but we're finding that the forums are doing... (read more)
I actually work in the graduate career center at my university (my fellowship is doing that rather than teaching) and this is what we specialize in! I too am a PhD student moving out of academia after the PhD. Many of our office's online resources are applicable to any PhD... (read more)
"On a side note, I've discovered it's really hard to say "I'm interested in small buoys" without creating awkward silence in a room. "
HAHAHAHA... yeah, it's probably best not to ever do that.(read more)
I have seen the bracelet style used on large mammals with mixed success and failure. The main considerations are terrain the animal uses, and fitting the bracelet properly. Both affect the 1. durability of the tag and 2. whether it cuts into the skin. In the case of fitting to... (read more)
Many thanks for the pointer, I shall discusss it with our local tech disussion group here tomorrow morning. One of the guy's, the PhD candidate in tehrapy audio analysis, will be most ineterested as well. Our project is indeed becoming ever more interesting, like an... (read more)
Thanks Thomas. The option of desertstar seems strong, and it needs to be strong for the animals I work with (large carnivores). Indeed the pod would need to be designed to fit the collar type, but that's not impossible. (read more)
the runtime depends very much on sampling rates and data types that are collected. In Table 1 in the paper we explored runtimes for 12mAh and 25mAh batteries. If the homerange of an animal can be covered entirely by the tracking grid (in our case 1.5ha) and you track the animal... (read more)
We've got a fascinating paper to show you, as shared with us by Claude Miaud.
This study looks at how amphibian species use wildlife passages beneath railways, and how the inclusion of acoustic enrichment (broadcasting species-specific mating calls in the tunnels... (read more)
Hi wildlabbers -
Does anyone know of any AI/tool that can translate live transcripts from calls (zoom/teams etc etc)? We're looking at running virtual events in other languages, but in the meantime this came up as an idea in the chat after the last tutorial. I know otter.ai is at doing... (read more)
Hi Tim and also Thomas
Thanks for your comments. It is fantastic that there have been so many replies to this thread in response to the request for thoughts, clarifications and questions on this topic.
I’m available on email. You can reach me directly via WILDLABS messages.... (read more)
I am new to recording but have been learning about acousting environmental monitoring for several years now. Covid19 has me wanting to start recording more than ever where I live because the soundscape has changed so dramatically. I grew up and live at Lake Tahoe, USA.... (read more)
Range at which animals hear sounds depend on 4 things:
1) the frequency (pitch) of the sound of interest. As a rule of thumb, lower frequency sounds travel farther since high frequency sounds are subject to more absorption transmission losses.
2) the medium in... (read more)
I'm not aware of any guidelines published, but we've got the smooth coated otter in our camera traps before, and I suggest you follow a stratified sampling approach. You can stratify habitats along streams and flowing water bodies and place camera traps along stream banks... (read more)
I'm doing research on the details Amazonian food production as it pertains to deforestation. I'm looking understand the day-to-day of unsustainable farming practices. I'm interested in everything from the politics to what tools the farmers use. If you or anyone you know would be open to letting... (read more)
Steph, thank you so much for this, this is wonderful :) Really, really apreciate you sharing this with me :) Diving into all of the wonderful resources from you, thank you so very much for this!
Radek (read more)
This can be done, happy to help :) But I think I need to understand the situation a little bit more.
Do you already have the data for training / inference? Do you have any example images with the species in them annotated? Say a still from the camera with a tiger and a csv file... (read more)
Google’s Wildlife Insights, mentioned in another thread, can classify 614 different animal species.
It uses the Inception-V4 model as a basis, which is similar to GoogLeNet, and tunes it on camera trap images (... (read more)
Hi Yvan, My name is Jennifer Hartman and I work with Rogue Detection Teams, a program that works with and instructs conservation detection dog teams. Did you ever receive enough information to pursue your project? If not, one, we'd love to learn of more opportunities ourselves, as we have many... (read more)
The original R&D for this project was actually a project using moss. An FM radio was powered using a small pot, with the project dubbed "Moss FM" and it's what originally attracted me to this form of energy generation and where I first got in touch with Paolo Bombelli... (read more)
Hi all, our team in the EU is interested in putting together a synthesis paper on the availabie technologies that are out there that can be used by customs officials to better identify wildlife products in real time. Whether this is a phone / app based technology or an online-base web scraper... (read more)
Hi all, I'm looking for a bit of advice on GIS, QGIS and Mapbox and thought it time to make use of the WildLabs community's well of knowledge.
I'm trying to make a bathymetric contour map for a large section of the waters around Europe to help divers report sightings of particular... (read more)
There was a talk recently at ZSL where a similar thing was found using camera traps studying wild pigs in the Osa Penisula. Tracking and other audio evidence showed that the pigs populations were circumnavigating camera traps which appeared to be giving a reduced level of detection.
@... (read more)
Indeed, the German solution you identified might be a better solution than what I had found on Amazon, which were mostly Doppler solutions, and thinking more about it, would not give you the ability to do long term data analytics on the traffic patterns, which might be important... (read more)
I think that tracking would be an interesting way to go, but the issue is that if you do discover who takes it and the person is dangerous, how can it be handled. I guess it's more of a game of deterrents and understanding why people take the cameras. If they just think they are security cameras... (read more)
Joachim and Carlos,
Thank you both very much for all your help so far with this problem, all of your input is very constructive. I have had look into the CCTV tech and also that researchgate link, and both have provided me with a few more options. At the moment I am organising a visit to... (read more)
I am trying to convince my country's nature protection agency to run a conservation hackathon (on a specific issue or problem of their choice). In order to be convinced, they asked me for success stories from previous conservation-themed hackatons around the world, and while I could... (read more)
What frequecy are you looking to record, how long does the mic need to run for, what is the distance between the microphone and the "listening" site? As (unless I've missed something) an off the shelf radio microphone does exactly that job. (read more)
Please find attached, a short note wherein we propose 03 postulates of soundscape ecology. The focus here is in soundscapes than sound of individual species. Our ability to separate a given sound clip into its constituent components is presently limited.
In this background would... (read more)
we are designing a study to document presence or absence of spider monkeys in forest fragments in western Ecuador. We aim to record occurrences using the playback method, but we are unsure about the best speaker device we should use. If you have had a... (read more)
This is all very interesting. The solution you describe seems eminently doable and in fact quite cheap. So doable and cheap that it may behoove one to also ask what the higher level vision is, in order to further constrain the solution.
For instance is there a wider... (read more)
It sounds like the Iris on the lens may be stuck open or its been drifting into an open position (hence why you could see images for a while, but now the image is completely whited out). Is there the ability to alter the lens Iris on the camera?
If you can view what... (read more)
Amaxing, thank you! We had to put them out already so have gone with the super-tech solution of a *very* high pole for now but will look at speaking to Sebastian, or with your contact Rachel if that fails. Thank you so much! Chloe (read more)
I am doing the almost same thing, since here we have a problem between elephant and human living in the same area and conflict a lot. We would like to warn people when elephants are approching by camera trap's detection of elephants.
How is your work now? Maybe we... (read more)
My preference is to use Adobe Lightroom, allowing me to move forwards or backwards one frame at a time. I can also adjust the exposure. This is an example from one of my videos.
I hope this is helpful.(read more)
Rachel has some practical suggestions about rigging your current centrifuge up to fit the small tubes. What do you think - vIable?
1) If you're measuring hematocrit, perhaps using flat-bottomed vials which do fit (less accurate though)
2)... (read more)
The following two papers describe our attempst to develop an open source RPi camera trap platform with long range communications capability, and may be of interest:
Nazir, S., Fairhurst, G., Verdicchio, F., 2017. WiSE - a satellite-based system for remote monitoring. Int. J. Satell.... (read more)
They will want a camera with good tolerance to humidity + precipitation (so a camera with a proper O-ring seal, and pack it with regularly-dried silica gel). Elephants will likely have a go at the cameras - so they will want to think about protecting their cameras with heavy-... (read more)
A number of good points have been made. In terms of remote-enable camera traps, you will mainly find one that use cellular data signals to transmit images. Typically these are thumbnails rather full resolution, so you will likely still need to retrieve teh emory cards for analysis. Also, traps... (read more)
The facts are simple. If you violate the assumption of independence of sampling events you will bias the result. In the event of multiple observations by overestimating occupancy due to counting the same animal twice. There is therefore no answer to your problem. People try to overcome it by... (read more)
for Site - in our camera trap data base we use the mountain or National/Nature park
Survey - is connected to the time scale - i.e. This mountain2015 or 2016
Station is the actual place of the cameras (1 or 2) with GPS coordinates
Diana (read more)
We have a set of three Bushnells covering an African wild dog scent-marking site. They are at the apices of a triangle, with each camera just at the edge of the field of view of one of the others. This gives us a higher probability of detecting animals at the site, a better view of the action on... (read more)
I'm looking at using a combination of machine learning and satellite imagery to identify and count individual animals, such as elephants on a savannah. I was wondering if anyone has any thoughts on this, and how to get really high resolution imagery, better than 30cm?... (read more)
We are working on the identification of the threats along the flyway of the Egyptian vulture, endangered vutlure species migrating from Europe to Africa.
As powerlines represent an important danger for these raptors and other migratory birds, it is important for us to situate them. For... (read more)