Back in September I placed a trail camera up river to capture the goings on of the locals.
This is my first time using these cameras in this manner. I set it up and left it for several months. I came back twice to swap out the cards. The first time I left the camera for a month. After swapping the card and getting home I found the 32 Gig card had filled up in only 6 days,and than It sat there for 3 more weeks doing nothing! Clearly I needed to cut down on the memory being filled so quickly! The camera turns on when anything walks in front of it. I found a lot of the memory was being filled up by bears searching for salmon at night. I couldn’t tell what was going on but I could see their beady eyes shining back at me.
I’ve always been curious If bears hunted for salmon at night? I’ve never been brave enough to paddle upstream to find out myself. Our eyesight isn’t that good in the dark,maybe we could get away with it during a full moon but generally speaking we are blind as bats out in the dark. Bears have a reflective layer coating the back of their eye. Think of a stainless steel bowl. This reflects the light back out.
The eye is made up of two basic units,rods and cones. Cones are used for colour while rods are used for light intensity. Light coming into the eye hits the front of the rod creating a signal. It than hits the back of the eye and the light is reflected back out to the backside of the rod where it is detected a second time. So by having this extra light capacity the animal can see very well in the dark. Many animals have this ability. Our own pets have this reflective coating.
So I decided to cut out all of the night shots to help reduce the storage problem. I also cut the video length from 30 seconds to 15 seconds. I programmed it to come on at 7 am and turn off at 7 pm.
I found this stretched the memory capacity significantly! Here are a few videos for your entertainment.
This shows a bear searching for salmon. He cannot see but we can that there are zero salmon in that pool. Keep searching buddy!
This video shows a bear that has grabbed a salmon. Once a bear grabs a salmon they usually walk off into the forest right away so another bear won’t see them with the salmon. If another bear does see it with a salmon there is a good chance it would go after that bear. Which usually causes the bear to drop its prize and flee in fright!
Bullying is alive and well in Nature!
This shows a bear walking through the lower pool in search of its breakfast.
You can see a eagles failed attempt at grabbing its own breakfast.
This is the last video I shot. It shows me arriving to grab the camera. Season was done!