History: Aves

Are Birds Modern-Day Dinosaurs? Using the link provided or going to Edpuzzle, please watch the video and answer the questions associated. Are Birds Modern-Day Dinosaurs? Using your notes, fill in the blanks. Ornithology is the study of birds Archaeopteryx is the connecting link between reptiles and birds. Biologists refer to birds as “feathered dinosaurs” because they are believed to have evolved from small, two-legged dinosaurs called theropods. The scales in both, birds and reptiles are composed of this betakeratin, a type of protein. Explain how Archaeopteryx lithographica, demonstrated the connection between theropods and birds. Place the description underneath the correct animal grouping. Birds and Reptiles single occipital condyle single middle ear bone: stapes lower jaw composed of 5-6 bones waste: uric acid lay eggs Some animals can have scales on legs Mammal two occipital condyles three middle ear bones: incus, malleus, and stapes lower jaw composed of one single bone waste: urea Do not lay eggs hair or fur Aves Wordsearch To mark a word click it’s first letter then click its last UROPYGIAL FEATHERS AIRSACS GIZZARD CLOACA STAPES HOLLOW SYRINX SCALES WINGS DOWN EGGS AVES CROP BEAK