ID from sound Southern Oregon coast, USA 16 Sep (1 Viewer)

[Lisa W]

HI, hoping I can get an ID on this fellow. He was hidden in the creek area behind my house yesterday. I searched with the binoculars for over 20 minutes but could never see the bird. The banging noise is due to the building going in across from us. There are a couple of 2 note calls and then one three note near the end. Any help appreciated.
View attachment Audio-trimmed.mp3

 

[tom baxter]

I’d guess Chestnut-backed Chickadee but not completely sure.

 

[KC Foggin]

Chickadee was in my thoughts as well Lisa.

 

[Lisa W]

Thanks, both of you. I know they are up here, just need to see the little devils.