This is all very simple. The whole song follows this same pattern: Am, C, F, G. It's 
on the 3rd fret, and these chords are relative to the capo.
It's 3/4 timing, like a waltz, so strum appropriately. Each chord gets exactly 4 
and this does not change.
Flightless Bird, American Mouth
by Iron & Wine

Verse 1:
         C
I was a quick wet boy
            Am
Diving too deep for coins
            F
All of your straight blind eyes
          G
Wide on my plastic toys
             C
And when the cops closed the fair
          Am
I cut my long baby hair
           F
Stole me a dog-eared map
                  G
And called for you everywhere

Chorus:
        C
Have I found you?
           Am     F        G
Flightless bird, jealous, weeping
C
Or lost you?
Am
American mouth
F         G
Big bill looming

Verse 2:
           C
Now I’m a fat house cat
            Am
Cursing my sore blunt tongue
             F
Watching the warm poison rats
                  G
Curl through the wide/white fence cracks
           C
Kissing on magazine photos
      Am                          F
Those fishing lures thrown in the cold and clean
               G
Blood of Christ mountain stream

Chorus:
C
Have I found you?
Am               F          G
Flightless bird, brown hair bleeding
C
Or lost you?
Am
American mouth
F         G
Big bill, still going down