Forgive me for being totally clueless, but does this tree look sick? We have lived here a few years now and each year pine needles fall to the ground. I have never noticed how the tree progresses into winter but I recently read pines are supposed to be evergreen. Again, I have no knowledge of trees. Just want to make sure we are taking care of it as well as we can and if it is dying we can take care of that before someone gets hurt. Thank you!