Weird nighttime chirping bird

(yonkers, ny)

There's a bird in my backyard. It chirps pretty much all night. But they are not normal chirps, they almost sound like alien noises half the time. It will chirp twice, then onto another very weird sounding chirp and so on... Almost like a car alarm gone bad.

I noticed the other day outside my house a few birds with longer legs than most. Their bodies resembled a version of a bigger sparrow, they are bigger. But one had a blue chest, and a couple other had red/orange chests. They very much looked like mockingbirds. But from my research I see that mockingbirds do not have colored chests.

I'm dying to know!