Just got the album and listened to it at home. However, at the last part of Burning in the Skies (after the quiet moment with Chester's chrous aka after 3:20), I hear a tweaking sound (like birds but very sharp) every 5 seconds or so e.g. 3:40, 3:55. I wonder if you guys got this noise-like sound while you're listening... PS: and please don't say I'm being picky or something, I just had to ask.