That's a juniper. They have very modified cones that look like berries.

It is normal for the old foliage on the inside of the crown to go brown, that's nothing to worry about. Only worry if the new outer foliage in full sun dies.

Resin

Or an excessive amount of inner goes brown, leaving only a small amount of green at the tips.

BBOY The last poster ,I do not understand your message , can you clarify it

I guess he's adding to my last sentence  "Only worry if the new outer foliage in full sun dies . . . or if an excessive amount of inner goes brown, leaving only a small amount of green at the tips"

Resin

It does seem like the outer part is green and the inner part of most branches are turning brown. Is this the end of my tree? Is there anything I should try?

Dig around in the dirt and look to see if the soil is, in fact, moist. "Plenty of rain" not amounting to inch per week or more is less than adequate.

That's just how conifers grow, especially dense ones. The new foliage shades out the old, and the old dies off. However, the branches are still alive and transmitting water and nutrients to the fresh growth. If you think about it, the word "evergreen" is misleading. It may keep its leaves year-round, but almost any mature evergreen plant you look at, whether coniferous or broadleaved, no longer has the leaves that it had ten or even five years ago.

Your tree can go on for many years yet like this. You can maybe blow out the brown foliage with a hose if it bothers you.

KarinL

What a coincidence! I also have pine trees with berries going out my lane. Only, around here we call them Cedars. Cedar Waxwings are among several bird species that are after these berries in the winter.
I remember an old photo in an agronomy text by N. Brady.
The root system of a 8 year old J. virginiana had been dug out by hand. Guess how far the roots went down? 16 FEET.
These trees are true xeriphytes, tolerant of the worst conditions. In my state they live in serpentine, shale and lime barrens. Sandy soils of the coastal plain, clay of the piedmont and rocky soils of the mountain zone are no problem.
Your tree is simply shedding old needles, they can't hang on to them forever. No need to get out the irrigation hose. (I was just waiting for someone to recommend a soil test). Your 28' tall Red Cedar is fine.
Sam