Looks like a Chimney Swift (appropriately enough). Which means you may have more.
This is absolutely hilarious!! I have to insert an image of my own SO doing this, since I know nothing about yours, and the mental pic has me almost on the floor. Thank you! 
The only things clear to me are candles and the mesh that covers the fireplace. I am not trying to pick at you; you already said it’s not the best pic, (and I imagine you were trying to take it in a hurry!) but where should I be looking? Upper/lower left? Upper/lower right?
No, if it all went down the way I envision it, your third person would be rolling around on the floor, trying to breathe between laughing, and you’d mostly gotten video of the ceiling. Maybe vibrating a bit, with the sound of “AH-HAHAHAHA!!!” in the background!
Reminds me - I once lived in an apt that was on the top floor of the building. I heard a bangety, bangety, THUMP from the roof into my utility closet. Then I heard skittery banging sounds from inside the closet. My two cats were riveted to the door. I looked at the intake vent, and saw little black claws gripping the slats. I thought it was a bird. I called my downstairs neighbor, my drinking buddy, and asked him if he would help me get this bird out of the closet. Sure, he would!! He came upstairs, unscrewed the vent, peeked inside, and slammed it shut! Why Child, it’s a squirrel!! They’re dangerous! They could have rabies!
There was maybe 10 feet straight from the vent to the door. On one side, the dining room, kitchen, bathroom, and two bedrooms. On the other side, the living room, full of glass candle holders and little breakable knick-knacks. We shut the cats in a bedroom. Closed the bathroom and both bedroom doors. Made a “wall” with dining room chairs and blankets on the one side, which my neighbor chose to man. I took the living room side. Made a barrier with couch cushions. (In hindsight - couch cushions?! Really?! It’s a freaking SQUIRREL!! :smack: )
Ok, I took a blanket to shoo it out the door, or throw over it, whichever was appropriate. He opened the vent. The squirrel came out, and headed for the door. Great! Then it reconsidered, and headed towards me. I freaked, raised the blanket, and shouted, “AAHH!!” (Or something very like that.) The squirrel reconsidered and headed toward the dining room. Encouraged by the squirrel’s reaction to me, my neighbor raised his arms and shouted, “AAHH!!” The squirrel decided we were too much to deal with after falling down the hole, and headed out the door.
Richard and I proceeded to get very drunk… and good time was had by all.
That sure looks like it. Thanks!
There are candles on the left, the metal mesh on the right, the door hinge in the middle of the pic, and the bird is hanging on the left side of the metal mesh just to the right of the door hinge. The rightmost white blob (just to the right of the door hinge) isn’t a candle, it’s part of the bird. All of the candles are to the left of the door hinge. The bird’s wing is just below the white part of the bird, and the bird is facing so that its back is towards the candles, if that helps you orient it.
You’re probably right about that.
The squirrel learn you were not trees, and decided that “door” was the best way to go to find one…
Lighter? What does gravity have to do with this?
There’s that word again; lighter. Why are things so light in the future? Is there a problem with the earth’s gravitational pull?
-Dr. Emmett Brown: 
Meanwhile, the dirty birdy is going to be covered with a lot of soot whether you chase it out the door, or if it flies out the door on it’s own.
Is it evil that my first thought was, “light a fire”?
My thought too. You may have others actually nesting inside the chimney. In which case you are stuck with them until the babies all fledge and fly away. After which, you can have the chimney cleaned and get a screen cover for it.
I’d inspect it now, and get that cover ASAP if no nests are found.
Chimney swifts are cool birds. The Audubon Society put up a bunch of “fake chimneys” as nesting sites for the species.
This scene should go in a movie, or a sitcom.
This was totally a job for your cats. They’ll punish you for denying them a kill
Canary and a coal miner?
Very hard to see from the photo…but, to be honest, what I can make out looks a bit like a chimney swift, believe it or not.
Oh for crying out loud, missed Colibri’s post. 
Tsk! I’m notifying the ASPCA. Or the American Barbecue Club, I’m not sure.