Blue-yellow budgie with leg band L-103

I lost my blue-yellow budgie yesterday around 3pm after a window screen snagged and I was rushing out of my apartment on West Burnside Street in Portland, near Powell's City of Books. He's small, about the size of a canary, with a bright cobalt blue tail and a pale yellow chest; a silver leg band with 'L-103' on his left leg. He has one peculiar white patch on his left wing. He’s been part of our family for years and the moment he vanished I felt my heart drop—he’s incredibly friendly and chatty, so I’m worried he might be scared and perched nearby waiting to be called. If you spot him, please message me; I’d be forever grateful to have him back.