As natural predators, cats can't help but chirp in excitement when their prey is near.
Your cat meows, purrs, and occasionally hisses, but have you ever heard her chirp? The next time your cat spots a bird outside the window or stalks a bug just out of reach, turn the volume down on whatever you're listening to and listen closely. Dr. Erika Loftin from DoveLewis Emergency Animal Hospitals says;
A cat stuck inside watching as birds swarm a nearby bird feeder is likely to make this funny sound. To some, it sounds like a frustrated mumbling, but Loftin describes it as a sound made out of excitement. Either way, it's adorable to watch, and this video of a house cat hunter is a prime example.
Cats of all ages and breeds have been known to emit this bird-like chatter when enthralled by possible prey. But their target doesn't always have to be alive. Tempting your cat with a feathered toy or laser pointer may be enough to get them chirping in excitement.