Everything is fine now, I left the garage door open since their nesting box is right next to my garage and it's parents coaxed it out and back into the nest. I counted 5 wrens in the nesting box. Thanks for your help though.

if the fridge is running the bird may be using the fridge motor for warmth, try turning it off and putting a small heater or something warm nearby. also keep food and water nearby to try lure it out.

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I was trying to remove a piece of plastic (their dumb parents used as nesting) lodged in a baby bird's throat and was successful but the bird ran under my fridge in my garage! I've tried moving the fridge but it's stuck in the machine parts and pipes under the fridge. I've tried playing house wren noises yet all it does is chirp. I've tried placing it's nesting box next to the fridge and having it's siblings call for it but nothing. HELP! PLEASE!