Key Identification Features
- The wings are very distinctive: flight feathers are black, and adult primaries have markings that create a yellow stripe and white "fishhooks" on the closed wing.
- When a flock takes off or lands, the wings produce a distinctive rattling sound that can be heard up to 30 m (98 ft) away, though this is not classified as a call.
For instant identification in the field, use the iNature app — AI-powered, works offline.