This is a question that we often get asked. The answer is emphatically “No!”.  The important word here  is “from“. Birds did not evolve from dinosaurs, birds are dinosaurs.

It is interesting that this distinction is often not made by birders, even those with a biological background. It creates a great misunderstanding of the timeframe over which birds evolved.

If we go way back to the early Cretaceous, birds already existed, and a group of birds known as the Enantiornithines accounted for at least half of them. Almost all had teeth and clawed fingers on each wing, but otherwise looked like modern birds. Much of what we know about early bird evolution comes from the study of rich fossil beds in China. These fossil beds have many species of Enantiornithines, with lots still to be studied. 

There were lots of species of the dinosaurs that we call birds long before the extinction of the non-avian dinosaurs.