Warning: Graphic content

It’s a bird-eat-bird world out there!

A ruthless raven was caught on camera ripping the beating heart from a half-alive pigeon on a New York City subway platform.

The sinister squawker is shown going full “Temple of Doom” on the poor pigeon as it writhes on the cement at the Kings Highway station in Brooklyn.

“Only in New York City. It’s either eat or get eaten,” the video’s narrator says. “Yo, that’s a raven. He just ate his homey!”

The bird then tears out the pigeon’s gizzards as it flaps its wings one final time, the wild video shows.

Observers joked the ominous bird-icide is a metaphor for competitive life in the Big Apple — and the embattled New York City subway system itself, according to Gothamist, which first reported the video.