The offspring of a scarlet tanager and rose-breasted grosbeak—distantly related birds whose evolutionary paths diverged 10 million years ago—was recently found in Pennsylvania. A hybrid produced by a ...

In Texas, biologists have documented an extraordinary bird — the natural hybrid offspring of a green jay and a blue jay. Once separated by millions of years of evolution and distinct ranges, the two ...

Biologists at The University of Texas at Austin, who have reported discovering a bird that's the natural result of a green jay and a blue jay's mating, say it may be among the first examples of a ...