What is wrong beside my pine tree? I have a pine tree contained by my front yard, I don't...

I have a pine tree contained by my front yard, I don't know what type it is though. I enjoy just notice that a large portion of the needles are turning wan, not brown as if its not getting water. The needles are within little bunches that look like broom ends and in attendance are several bunches on each branch. One bunch might be completely washed out, one completely green and one with more pallid than green in it. The yellowing seem to have started on the inside and is working its passageway outward. Can anyone tell me what this is? I hold been questioning the forestry page looking for an answer and so far nothing. Hope someone here can grant me an idea of whats scheduled to my tree. Thanks!
Answers:    The good report is that the needle drop is a inborn process. We begin to make out the process when the interior needles of the pine tree begin to turn sickly and fall bad. Pine trees will produce new plunger growth at the tips of the branches. Green needles on the tips means the tree is on form.

All trees cycle their leaves, even evergreens. Different pines hold their needles for various length of time. Many pine trees hold their needles for two to three years
In pines, once the new needles own expanded, the oldest needles on each branch will start to turn ashen as the tree cuts off the flow of sea and nutrients to those needles. The tree will then wall sour the connective tissue between the needle and its host branch. When this is complete the needles will drip to the ground leaving a bit more of the host twig eternally bare as a result. So when you look into the interior of a pine tree you won't see any needles.
Once a big snow falls or a hard precipitation arrives the needles will fall to the ground and the pines will show with the sole purpose the green needles. most probably you are noticing the washed out needles now because wind have be light and snow or rainfall hasn¡¯t removed the needles from the tree.
Parasites