Dinosaurs were reptiles. So why is it that we say birds are the descendants of these incredible creatures? Scientists have long studied dinosaur bodies and found connections to modern birds. It's all part of evolution! Readers learn all about this area of study and much more dinosaur science in this colorfully illustrated book. Written by a dinosaur expert, the book gives lots of information in bite-sized chunks to appeal to readers of all levels. Its content supports knowledge building, a key component of the science of reading.