Hooded Warbler Nest?

My husband found this nest on his walk down the driveway to get the morning paper the other day:



The measurements are:

• 1-1/2 to 1-3/4" inside diameter
• 2-1/2 to 3" outside diameter
• 1-1/2" height
  

He found the nest where our driveway goes over a culvert over a cove area. It appeared to have fallen out of a lower branch of a yellow poplar tree. This is the same area and perhaps the same tree I saw a pair of hooded warblers last summer. Maybe they were protecting their nest.

The measurements correspond with those of the Hooded Warbler's nest in the Peterson field guide Eastern Birds' Nests. In addition, the outside of the nest is covered with a white substance that secures the nest. The book states that the nest is "Neat, compact; built of dead leaves. . . , grasses and lined with soft grasses . . . often fastened with spider silk." Sounds pretty close to the description of this nest--the white stuff could be spider silk. Also, the photograph in the book looked very similar.

I also saw a Red-Eyed Vireo in that area but its nest is decorated on the outside with lichens. I did not see any lichens on this nest. Of course, the nest is not fresh and may have had lichens at one time.

So, what do you think? Have you ever seen a Hooded Warbler's nest?