But bird tool use goes far beyond corvids. For instance, green herons use twigs, feathers, insects, or even bread to bait fish. The heron tosses its chosen lure onto the surface of a pond and, as soon ...

North American birders can see multiple types of cardinals! But you'll have to travel to check these birds off your list.

Researchers believe that the cardinal frequenting the Caldwells’ bird feeder in Erie, Pennsylvania, is a rare bilateral gynandromorph, half male and half female. Not much is known about the unusual ...

As an adjective cardinal refers to things of basic or main importance, implying that the outcomes depend on them. In ...