We have a large Doug Fir in our front yard and there is an unoccupied, hanging nest much like those built by weaver birds but I never saw who built it. We're in the Alameda neighborhood. What kind of bird builds tha type of nest?

You might want to call the Audubon Society directly, and ask them this question. You might also want to try to take a couple of pictures if you can, so that they can actually see the nest, and they would probably be a little bit more helpful to you in that case. You could also call the Jackson bottom Wetlands Society in Hillsboro, and ask them for their input as well, as they are very knowledgeable about birds and nests in the area. I hope this helps. Good luck! Cheers!

It could be an oriole. I'm from S. California, so not sure what species you have up there.