Uh.. is that supposed to happen? I know you actually have to be near a dead dragon for this to take place.. and I looked around to see if some giants or guards killed a dragon on their own somehow and found no dragon remains anywhere near by. Is this a nirnroot thing - or a glitch? lol? Not even sure if it really gave me an extra soul to unlock a word of power as I wasn't counting how many dragons I'd already killed.
soooo... derp