Silence in Whatcom County, Washington

It was the second weekend in September 2018, my father and I went for a drive up Sumas mountain like we've done many times before when we decided to stop at this clear cut over looking the valley. It was about 9pm in the evening and we were scanning the clear cut with our flashlights when we first saw the eyeshine in the distance approximately 150 to 200yards. We saw 3 pairs of eye shine and at different heights thinking at first we are seeing a mother bear and cubs but after shining our flashlights in their direction the larger creature charged up the hill along the tree line grunting and hollering then stopped and waited for the other 2. Thats when we got our flashlights on it and it was large and brown. Then the larger one turned into the woods heading towards us breaking down branches and saplings then it just stopped and everything went silent. As my dad and I sat there the other 2 sat on the edge of the tree line just watching us they walked around a bit but every time we made a noise they would stop what they were doing and just watched us. The eyeshine was an orangeish glow. It also seemed as if one was small cause you would see its head pop up behind stumps and logs, this went on for 3 hours. At about midnight the larger creature came out from the tree line. We got our flashlights on it. That's when my dad and I saw this creature step over a log and proceed to walk down hill on 2 legs and that's when the other 2 followed it. I hollered at it and you could see it turn and look at us and you could see the head bob just like when a person is walking down hill. You should know there are no brown bears on Sumas mountain. a