Hanging Bird Nests

Yogi Berra said, You can observe a lot by just watching.  This is particularly true when taking a nature walk.

This morning, while walking through trees in the nearby reservoir area, I noticed a hanging bird nest.  I then began watching the trees carefully and observed hanging nests all over the forest.  Here are two examples.

Based on a quick Google search, I am guessing that these hanging nests are made by bushtits.