Discover and read the best of Twitter Threads about #cameratrap
Most recents (11)
About a month ago, I watched a little red-backed vole dash into this hole in an old downed aspen tree in my backyard. It was clear that it was living there, so I set up my trail camera to catch a glimpse of the wildlife using this log. #cameratrap 1/ 🧵 
I caught the little vole coming and going from the hole several times over the first night. 2/ #CameraTrap
The vole wasn't the only one hanging out in the area. A deer mouse also came and went near the log, scurrying along the tangled forest floor looking for food. #CameraTrap 3/ #TheOldLog
Do you use #CameraTraps for wildlife abundance? Do you feel intimidated by the complex models & codes that statisticians come up with to help design & analyze camera trap data?
If your answer is yes to any of the above, follow this thread with a new resource that is pure gold:
If your answer is yes to any of the above, follow this thread with a new resource that is pure gold:
Spatial Capture Recapture (#SCR) co-developer @david_borchers and fellow @indurbach with @statsStAndrews have created a fabulous website with online training material to help get started with spatial capture-recapture (SCR) methods, with a focus on camera traps.
With simple, intuitive navigation, the site has three sections:
1. Software
2. Training videos
3. Other resources
While there are a few books on #SCR, remember the method has undergone rapid development during the last decade, making it daunting to keep pace...
1. Software
2. Training videos
3. Other resources
While there are a few books on #SCR, remember the method has undergone rapid development during the last decade, making it daunting to keep pace...
Density is the gold standard of #cameratrap monitoring. But it’s famously hard to estimate, & has only been done before 1 species at a time.
We developed a multi-species Random Encounter Model (REM) to allow density estimation for a species community 🧵
besjournals.onlinelibrary.wiley.com/doi/abs/10.111…
We developed a multi-species Random Encounter Model (REM) to allow density estimation for a species community 🧵
besjournals.onlinelibrary.wiley.com/doi/abs/10.111…
Why is this useful?
Managers, conservationists and, of course, community ecologists are often interested in multiple species at once. E.g. because they’d like to know the density of both predator & prey. Or simply for a more holistic understanding of the status of biodiversity.
Managers, conservationists and, of course, community ecologists are often interested in multiple species at once. E.g. because they’d like to know the density of both predator & prey. Or simply for a more holistic understanding of the status of biodiversity.
Typical methods for density estimation, based on capture-recapture (CR), are reliant on distinctive markings 🐅🐆🦓. But most species are 'unmarked' - they cannot be individually ID’d 🦌🐗🦘🐃🦨🐿️🐇🐪🐐🐎. So we know we can't do multi-species density estimation using CR.
Have you ever thought about how we monitor #wildlife? In this thread🧵 I will explain my #PhDthesis
#CREAF20K #cameratraps #mammals #conservation
#CREAF20K #cameratraps #mammals #conservation
Traditional methods of studying wildlife were based on direct observation of animals🧐🔭.
However, the technological boom of recent decades has also changed the way of monitoring wildlife. Do you want to know how?
Keyword is #cameratrap 📸!!
However, the technological boom of recent decades has also changed the way of monitoring wildlife. Do you want to know how?
Keyword is #cameratrap 📸!!
#Cameratraps are remotely activated cameras by an infrared sensor. When an animal passes in front of them, they record photos. Cameras operate with batteries and SD cards, we can place them in remote areas. Finally, animals don't react to them and showed their habitual behaviour
It’s #WorldWildlifeDay! To celebrate, here’s the most unusual #wildlife interaction I’ve captured w/ a #CameraTrap: a golden eagle attacking a great-horned owl, which were then attacked by a mule deer, followed by a coyote rushing to join in! 🧵
#WAPredatorPreyProject
#WAPredatorPreyProject
Let’s break this down a bit. Our scene opens with a golden #eagle standing over (what we soon discover is) a great-horned #owl. Is this an attempted predation event? A scuffle over territory or food? Not sure. #BirdTwitter help me out. What do you think is happening here?
Then this rando mule deer shows up. A chance encounter between two (or three) species can happen when they use similar habitats, so this in itself isn’t that weird. But what happens next blows my mind. Also, check out the look on that eagle’s face! It’s not happy.
We use #Tech4Wildlife for our project developing automated methods of individual ID for brown bears and other wildlife. We use a combination of #cameratrapping, visual observations, and #machinelearning with collaborative partnerships to make this happen. @WILDLABSNET 1/
Despite the pandemic, 2020 has been a big year for our project. Our wonderful partners @knightinlet @wildbearlodge @nanwakolas took a central role in getting #cameratraps up and running for the field season. #Tech4Wildlife @WILDLABSNET 2/
We conducted some testing of our BearID software in real time using @Docker and the help of some #grizzlybears. We are using a population of bears that have been studied for >20yrs to assess the robustness of our #DeepLearning models. #Tech4Wildlife @WILDLABSNET 3/
Thankful to this unknown man for striking a pose and for not messing with my camera set up after he stumbled upon it. Also added, a bobcat using the log just a couple weeks prior. #cameratrap #trailcam #photobomb
Of course twitter brings their A game
Are you kidding me?!
Set up a #cameratrap today with my toddler while my wife had zoom meetings. Game trail runs off to the right behind the hackberrys.
I like to aim my cameras low to get smaller species. Not interested in deer.
Like this guy!
THREAD: Jaguars are the iconic #bigcat of the #Americas. In Mesoamerica, largest and most important habitat is the Selva Maya in #Guatemala, #Mexico, #Belize.
2 areas of Selva Maya are immediate concern, writes WCS’s John Polisar. bit.ly/2rI7j6T #InternationalJaguarDay
2 areas of Selva Maya are immediate concern, writes WCS’s John Polisar. bit.ly/2rI7j6T #InternationalJaguarDay
Jaguar's require space—ranges can stretch to over 200 miles. @TheWCS works across 250,000 sq. miles and 10 countries helping secure their future. #InternationalJaguarDay
This 📷 is from @WCSEcuador. (2/5)
This 📷 is from @WCSEcuador. (2/5)
Camera traps are used to record wildlife in it’s natural environment, they are designed to be unobtrusive and cause minimal disturbance but its quite clear they are noticed by animals 1/n #CameraTrapTuesday #cameratrap
Though many have a camouflage design even an infra-red and ‘low-glow’ flash is still very visible + human scent around a camera site can make animals wary. Animals may react strongly to a camera when it is first put in place, but become accustomed to its presence over time 2/n
Depending on what you want from a camera this curious behaviour may not be a problem as animals stay in shot longer, allowing clearer images and videos to be taken which are great for sharing and can help with individual ID! 3/n #fox #cameratraps
UP FIRST TONIGHT: everyone's favorite river horse, the 1-seeded PYGMY HIPPO Hexaprotodon (formally Choeropsis) liberiensis, vs. the scrappy 4-seeded brush wolf, COYOTE Canis latrans! #2018MMM
Many minds came together to bring you tonight's first battle, so a quick hat-tip to @AnneWHilborn, @PKurnath, @TCastanea, & @tinkeringprim8. Seriously, the #teamwork has been amazing #Monstars #2018MMM
To reach the #FinalRoar, Hippo crushed star-nosed mole, intimidated both maned rat & Tasmanian devil, & STOMPED the cheetah out of competition #hangryhippo #2018MMM
