I'm writing a descriptive piece, and can't figure out whether this is grammatically correct, or whether I ought to place a semi-colon between "entry" and "crooked":
"As I walked in using the cobbled path, a squadron of pigeons nestled upon the roof observed my entry, their heads crooked towards me like a sniper’s gun is crooked on an enemy fighter."
My only line of thought was that, perhaps, in the last clause, rephrasing it to "their heads were crooked" would make the clause independent whereas without "were", as it is presented above, the clause is dependent?
Kind regards,
JP.