Hi Brigitte, I am glad that you like them. These directions were given to me by Ron Wolf. Good Luck.
Yamil
The location is within shouting distance of the Claremont Hotel on the Oakland /Berkeley border. Go up I-880 to downtown Oakland. Take I-980, then Cal Hwy 24, toward Walnut Creek. About 3 miles after you leave I-880, take the exit from Hwy 24 for Claremont Ave. Turn left at the foot of the exit ramp and go up Claremont Ave. about 1 mile to the Claremont Hotel. Just before the Claremont Hotel, you'll cross Ashby Ave. Continue up Claremont Ave. and start counting the side streets on the left side of the road. The fourth street on the left past Ashby should be Stonewall Rd. It's a very small lane, easy to miss. It looks more like a steep driveway. It's marked with a barely adequate street sign. If you go past the Claremont Hotel, you've gone too far.
The trailhead is on Stonewall Rd., only about one block up Stonewall from Claremont Ave. The entrance to the Claremont Canyon Preserve is well marked with a large sign. There's no parking at the trailhead. You'll have to park in the middle of the block on Stonewall.
The walk to the site is about 300 yards, all uphill. The "trail" is actually a fire road.
From the traihead, go uphill 150 yards to the first sharp switchback. At this point, the park district has put a saw horse on the trail warning dog owners about owls in the area. Continue uphill another 150 yards until you begin to get close to a second saw horse with a sign. At this point, turn around and look back down the trail. The nest is in a eucalyptus tree that is right next to the west side of the trail. You absolutely cannot see a thing when you're walking uphill. It's completely hidden from view when your going that direction. You'll walk right under it without realizing it's there. But when you go past it, turn around and look back down the trail, it's completely open to view. If you go past that second saw horse, you've gone too far.
All the locals who go walking up there now know about the nest, so you'll probably see a small crowd of gawkers. Just ask anyone along that stretch of trail who looks like one the neighborhood regulars.