For the intro, choruses and outro you can play the melody with the chord progression 
like this if you want:

|--3--1---0-----0--|
|--1--1---1--3--1--|
|--2-(2)-(2)-0--0--|
|--3-(3)-(3)-0--2--|
|--3---------2--3--|
|--1---------3-----|

   F        G   C


Intro: F G C x2


Verse:
   F            C      G             C
So what if your heroes changed their minds

    F                   C          G       C
And all you thought was right flew out the window

    F                  C       G      C
And all you based your life on wasn't real

   F            C    G         C
So what if your hero sells its soul

    F                C           G        C
And all your wildest dreams seem dull and dreary

    F               C             G         C
And all your secret thoughts seem cheap and lonesome

F                 C     G   C
What you going to do so all alone now



Chorus:
               F     G
Singing to the birds

C              F     G
Singing to the birds

C              F     G
Singing to the birds

C       F  G  C
Singing

C


Verse:
   F            C    G      C
So what if your hero fades away

    F                  C            G           C
And all the things you thought were orange were gray now

F             C          G        C
Who is it who brings you some new colors

   F            C    G     C
So what if your hero never was

F                 C     G   C
What you going to do so all alone there



Chorus:
               F     G
Singing to the birds

C              F     G  C
Singing to the birds

F
Singing



Bridge:
F                       G       C    F
 It's partly sunny, it's partly rain, mostly curious

   G       C
Or full of pain

F                   G        C
 You could learn to love yourself

F       G      C
Singing to the birds

C


Verse:
    F            C    G     C
And what if your hero never was

    F                C      G      C
And all the time you wasted wasn't real

    F               C       G       C
And all your wounds decided just to heal

    F                C           G       C
And all your wildest dreams were full of color

    F               C        G           C
And all your secret thoughts belonged to you

F                   C   G    C
What you going to do so all alone here

F  G  C x3


Chorus:
               F     G
Singing to the birds

C              F     G
Singing to the birds

C              F     G
Singing to the birds

C
Singing


Outro:
    F             G       C    F                  
G       C
It's partly sunny, partly rain, mostly curious or full of pain

F                    G         C      F
 You got to learn to count on someone

           G      C
Cause it's mostly pain

   F                    G        C
And it's kind of curious when it rains and

F                   G        C
 You could learn to love yourself

F                   G        C
 You could learn to love yourself

F                        G      C
 You could even learn to be yourself

F       G      F
Singing to the birds