[caww]

I’m in Western Pa....just above Pittsburg south of Erie.

After reading your link I can say I’ve seen and heard a lot of that written.......also I checked and there is indeed a second nest up in the corner of the awning.... maybe the one that keeps falling is the fake nest? I can’t see the other one, just the edges.

[Jamestown1630]

You probably have several wrens in your area. You could likely have a Carolina Wren, or a House Wren.

The former tends to mate for life - the latter is polygamous.

Watch the behaviors.

http://www.pgc.pa.gov/Education/WildlifeNotesIndex/Documents/wrens.pdf

The one we hear the most here where I am in Maryland, is the Carolina; ours sing a little slower than this (birds have ‘accents’ and ‘dialects’ in different regions, just like people do):

Carolina:

http://www.allaboutbirds.org/guide/Carolina_Wren/sounds

House:

http://www.allaboutbirds.org/guide/House_Wren/sounds

(My eyesight for birds has never been great; I rely a lot upon sounds and shapes.)