Those Thieving Birds/Strange Behaviour Lyrics

Lyric discussion by Persuasion 

Cover art for Those Thieving Birds/Strange Behaviour lyrics by Silverchair

I think this is about losing what we really are or who we really are rather. Like Those theiving birds=loss. And he says "if the sun wont shine, forever we'll never be fine" meaning if something good doesnt happen, he'll be sad/mad forever. And then he sings "Take my clothes and this strange behaviour" that means, take of the bad and all the layers. In other words strip me down to the old/normal me again. Also "if this keep tearing me apart" sounds like the loss of himself is tearing him apart. I think that is what this is aabout.