Celebrating their 150th anniversary, Birmingham were in no mood to give Clement and his side any presents as they started superbly.
Demarai Gray forced Vladan Kovacevic into a good low save after a minute before being integral to the opener soon after.
The forward superbly controlled Alex Cochrane’s long ball before his low pass across the six-yard box was tucked away by the unmarked Ducksch at the far post for his first goal since his summer move to St Andrew’s from Werder Bremen.
Ducksch fired over from eight yard soon after as the Canaries – who came into the game with one win in 14 matches – struggled to cope.
It got worse for former Rangers boss Clement midway through the half when Stansfield got in front of his marker to head in Patrick Roberts’ cross from the right after an excellent pass by Tomoki Iwata.
It could have been 3-0 had referee Anthony Backhouse awarded a penalty after Ducksch appeared to be pulled down by Harry Darling in the box three minutes after the second goal.
But Norwich came back into it with a superb move that sprung Jack Stacey free on the right, his cross was palmed away by James Beadle into the path of Kvistgaarden who finished from just inside the box.
Oscar Schwartau saw a close-range effort blocked by a Blues defender soon after as life appeared to return to the Canaries, only for it to be snuffed away when Ducksch was on the spot to tap in after Iwata’s header was palmed out by Kovacevic.
Stansfield made it 4-1 as he doubled his tally with an excellent finish off the underside of the bar after being put through on goal by Gray, who did well to dispossess Kenny McLean before a perfectly-weighted through ball to his striker.
Iwata hit the post with a long-range effort with 25 minutes to go after Jovon Makama and Emiliano Marcondes had chances saved for Norwich.
Marcondes and Duffy forced two good saves from Beadle from successive corners five minutes later as Norwich’s players tried to salvage some pride from the game.
But as the game drew to a close, Norwich created little apart from more worry for their fans – Clement knows he has his work cut out to try and turn the Canaries’ fortunes around.
