The area here is filled with large trees such as eucalyptus, redwood and oak.  Additional obstacles include block fences and a very busy four-lane road, on the edge of the property of the bed and breakfast.  Across the street, but in the opposite direction from that which Linus flew, is a creek with many feral cats as well as owls, sparrow hawks, and red-tailed hawks (well, maybe they would view Linus as a cousin).  It took a couple of minutes just to jump a fence or two, to get to the general area where I estimated Linus to be.  The first thing I did was to quickly check the roadway for a gray and red smudge.  Not seeing one in the near dark, I climbed yet another fence into a gated condo complex to look for him.  There was no sign of him but one of the condos has an older couple that used to own a grey parrot.  They helped by searching the trees with a flashlight, and they were kind enough to give me a key to the gate so that I didn't have to keep climbing it.  By now it was so dark that it was pointless to try and visually spot Linus (assuming he was even in the area).  I did wander about for a couple of hours whistling his contact call.  A couple of times, I thought I might have heard him but between the traffic, walls and buildings, it was really difficult to tell.  At least I hoped he could hear me and know that he wasn’t totally alone.