The USA international joined the Championship side on a season-long loan earlier in this transfer window to get some game time under his belt.
He has since played every match so far for the Blues as he looks to boost his development.
Trusty, 24, was part of John Eustace’s side who lost 1-0 away to Cardiff City yesterday.
Speaking after the game to the club’s official website, he provided this update on how he is finding life in the Midlands:
“I am just so happy to be here. Playing these games, it is just so nice.
“The guys have quality, the other team has quality and their pressing you and they really want to win.
“You see the fans, the atmosphere, singing ‘USA’ and I absolutely love it. It is an environment and an atmosphere that you want to be in. And, honestly, it is a team that you want to be in.”
Trusty is due to return to his parent club Arsenal at the end of this campaign so will be looking to get plenty of minutes in the meantime.
The Gunners swooped to sign him back in January from MLS side Colorado Rapids before loaning him back out there until the summer.
He started out at Philadelphia Union and went on to play 62 times for their first-team as a youngster, as well as spending a couple of years in the USL Championship with Bethlehem Steel.
Trusty and Birmingham are back in action on Tuesday night against Watford.
His parent club Arsenal beat Leicester City 4-2 yesterday and have Bournemouth at home next.