Both birds, the Peruvian warbling antbird and the yellow-breasted warbling antbird, belong to the same large family.

BBC: Songbirds sing cross-species duet

My guide sat close by, making alternately squawking and warbling turkey calls to lure the hardy birds ever closer.

BBC: Shooting a Thanksgiving dinner

Listening to other people's recordings requires nothing more than having your speakers plugged in, and in some cases the ability to endure some pretty tuneless warbling.

BBC: SingShot website

Her warbling feral pop vocals have already drawn comparisons with Gwen Stefani, who she often covers in her set, and the queen of theatrical pop Kate Bush.

BBC: Marina And The Diamonds